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Impact of quenched random fields on the ferroelectric-to-relaxor crossover in the solid solution (1-x)BaTi O3-xDyFe O3 Scopus SCIE
期刊论文 | 2018 , 98 (17) | Physical Review B
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Abstract :

© 2018 American Physical Society. Lead-based perovskite relaxor ferroelectrics are widely used as materials for numerous applications due to their extraordinary dielectric, piezoelectric, and electrostrictive properties. While the mechanisms of relaxor behavior are disputable, the importance of quenched (static) random electric fields created at nanoscale by the disordered heterovalent cations has been well recognized. Meanwhile, an increasing amount of scientific and technological efforts has been concentrated on lead-free perovskites, in particular, solid solutions of classical ferroelectric BaTiO3 (BT), which better meet ecological requirements. Among BT-based solutions the homovalent systems are elaborately studied where strong random electric fields are absent, while the solubility limit of heterovalent solutions is typically too low to fully reveal the peculiarities of relaxor behavior. In this paper, we prepare a perovskite solid solution system (1-x)Ba2+Ti4+O3-xDy3+Fe3+O3 (0≤x≤0.3) and study it as a model heterovalent lead-free system. We determine crystal structure, ferroelectric, and dielectric properties of ceramics in a wide range of temperatures and concentrations, construct a phase diagram, and find and analyze the concentration-induced crossover from normal ferroelectric to relaxor behavior. We demonstrate that quenched random electric fields of moderate strength promote the ferroelectric-to-relaxor crossover, but do not change qualitatively the peculiarities of relaxor behavior, while strong enough fields destroy the relaxor state, so that the material becomes an ordinary linear dielectric. The experimental results are compared with the predictions of known theories of relaxor ferroelectricity.

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GB/T 7714 Zhuang, Jian , Bokov, Alexei A. , Zhang, Nan et al. Impact of quenched random fields on the ferroelectric-to-relaxor crossover in the solid solution (1-x)BaTi O3-xDyFe O3 [J]. | Physical Review B , 2018 , 98 (17) .
MLA Zhuang, Jian et al. "Impact of quenched random fields on the ferroelectric-to-relaxor crossover in the solid solution (1-x)BaTi O3-xDyFe O3" . | Physical Review B 98 . 17 (2018) .
APA Zhuang, Jian , Bokov, Alexei A. , Zhang, Nan , Walker, David , Huo, Siqi , Zhang, Jie et al. Impact of quenched random fields on the ferroelectric-to-relaxor crossover in the solid solution (1-x)BaTi O3-xDyFe O3 . | Physical Review B , 2018 , 98 (17) .
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Investigation on thermoelectric properties of screen-printed La1-xSrxCrO3-In2O3 thermocouples for high temperature sensing EI SCIE Scopus
期刊论文 | 2018 , 38 (15) , 5030-5035 | JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
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La1-xSrxCrO3-In2O3 thick film thermocouples were fabricated by screen-printing method for high temperature sensing and the effects of Sr2+ content were investigated systematically. All La1-xSrxCrO3 thick films showed well crystallization with orthorhombic unit cell. Their average particle sizes showed the tendency of first increase then decrease gradually with the increase of Sr2+ content, and the maximum of average particle size was 1.76 mu m. At the same time, the conductivities were improved with the increase of Sr2+ content. The thermoelectric properties of La1-xSrxCrO3 depended on the Sr2+ content and the average Seebeck coefficients had an exponential decay tendency with the increase of Sr2+ content. For La1-xSrxCrO3 (x = 0.1-0.4)-In2O3 thermocouples, excellent repeatability and stability were observed through multi-cycles and long-time usage testing at high temperature. The La0.7Sr0.3CrO3-In2O3 thick film thermocouple with excellent thermal stability (drift rate: 0.81 degrees C/h) and reliability makes it become a promising candidate high sensitivity thermal sensor.

Keyword :

Thermoelectric voltage Thermocouple Lanthanum chromites High reliability High stability

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GB/T 7714 Liu, Dan , Shi, Peng , Ren, Wei et al. Investigation on thermoelectric properties of screen-printed La1-xSrxCrO3-In2O3 thermocouples for high temperature sensing [J]. | JOURNAL OF THE EUROPEAN CERAMIC SOCIETY , 2018 , 38 (15) : 5030-5035 .
MLA Liu, Dan et al. "Investigation on thermoelectric properties of screen-printed La1-xSrxCrO3-In2O3 thermocouples for high temperature sensing" . | JOURNAL OF THE EUROPEAN CERAMIC SOCIETY 38 . 15 (2018) : 5030-5035 .
APA Liu, Dan , Shi, Peng , Ren, Wei , Liu, Yantao , Liu, Ming , Zhang, Yijun et al. Investigation on thermoelectric properties of screen-printed La1-xSrxCrO3-In2O3 thermocouples for high temperature sensing . | JOURNAL OF THE EUROPEAN CERAMIC SOCIETY , 2018 , 38 (15) , 5030-5035 .
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Facile high-performance film thermocouple made of strontium lanthanum chromate for temperature sensing in air EI SCIE Scopus
期刊论文 | 2018 , 101 (11) , 4880-4886 | JOURNAL OF THE AMERICAN CERAMIC SOCIETY
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Film thermocouples as the most effective tool are used to monitor the real-time and accurate insitu temperature in harsh environment, which will demand their electrodes with high thermal-resistant properties, high sensitivity, and stability. In this work, a series of solid solutions based on strontium lanthanum chromate were systematically investigated as new electrodes. LaCrO3 and La0.8Sr0.2CrO3 with some glass additives were chosen to fabricate high-performance thick-film thermocouple due to a bigger Fermi level difference between them. The thermocouple shows a high sensitivity (107.8V/degrees C) during static calibration, and an excellent reproducibility and stability during multicycle calibrations carried out up to 1550 degrees C, resulting in a record ultra-high temperature sensing in film thermocouples. This facile thermocouple may open up a new way to measure high temperature in air or oxidation atmosphere accurately.

Keyword :

film thermocouple perovskite La1-xSrxCrO3 high sensitivity high temperature

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GB/T 7714 Liu, Dan , Shi, Peng , Ren, Wei et al. Facile high-performance film thermocouple made of strontium lanthanum chromate for temperature sensing in air [J]. | JOURNAL OF THE AMERICAN CERAMIC SOCIETY , 2018 , 101 (11) : 4880-4886 .
MLA Liu, Dan et al. "Facile high-performance film thermocouple made of strontium lanthanum chromate for temperature sensing in air" . | JOURNAL OF THE AMERICAN CERAMIC SOCIETY 101 . 11 (2018) : 4880-4886 .
APA Liu, Dan , Shi, Peng , Ren, Wei , Liu, Yantao , Liu, Ming , Niu, Gang et al. Facile high-performance film thermocouple made of strontium lanthanum chromate for temperature sensing in air . | JOURNAL OF THE AMERICAN CERAMIC SOCIETY , 2018 , 101 (11) , 4880-4886 .
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Determination of chemical ordering in the complex perovskite Pb(Cd1/3Nb2/3)O3 Scopus SCIE
期刊论文 | 2018 , 5 , 808-815 | IUCrJ
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© 2018 Caiyan Wang et al. Pure-phase Pb(Cd1/3Nb2/3)O3 (PCN) single crystals and ceramics with a complex perovskite structure are synthesized for the first time. The local chemical ordering in PCN has been investigated by X-ray diffraction (including diffuse scattering) and Cs-corrected transmission electron microscopy experiments. It is concluded that the PCN samples have large coherent chemical ordering regions that even extend to the long range, and the ordering model is consistent with β-type chemical ordered regions. The antiphase domain boundaries were also observed. Two dielectric anomaly peaks were found in these two types of samples, one of which indicates possible relaxor behaviour. The novel structure of the completely ordered regions and its relationship with the electrical properties make PCN a unique material for the fundamental understanding of chemically substituted perovskites.

Keyword :

atomic resolution EDS chemical ordering dielectric permittivity diffuse scattering electron microscopy perovskites relaxors

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GB/T 7714 Wang, Caiyan , Fu, Zhengqian , Zhang, Nan et al. Determination of chemical ordering in the complex perovskite Pb(Cd1/3Nb2/3)O3 [J]. | IUCrJ , 2018 , 5 : 808-815 .
MLA Wang, Caiyan et al. "Determination of chemical ordering in the complex perovskite Pb(Cd1/3Nb2/3)O3" . | IUCrJ 5 (2018) : 808-815 .
APA Wang, Caiyan , Fu, Zhengqian , Zhang, Nan , Paściak, Marek , Zhuang, Jian , Liu, Zenghui et al. Determination of chemical ordering in the complex perovskite Pb(Cd1/3Nb2/3)O3 . | IUCrJ , 2018 , 5 , 808-815 .
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A new kind of thermocouple made of p-type and n-type semi-conductive oxides with giant thermoelectric voltage for high temperature sensing EI SCIE Scopus
期刊论文 | 2018 , 6 (13) , 3206-3211 | JOURNAL OF MATERIALS CHEMISTRY C
WoS CC Cited Count: 5 SCOPUS Cited Count: 5
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A new kind of thermocouple consisting of n-type and p-type semi-conductive oxides with a giant thermoelectric voltage is reported. The thermocouple was fabricated from n-type La0.8Sr0.2CrO3 and p-type In2O3 and it exhibits a high thermoelectric voltage of 410.3 mV at 1270 degrees C, which is the highest value reported for any type of thermocouples to date. This achievement challenges the long-established material selection principles for thermocouples and opens a new way for designing highly sensitive thermal sensors. The thermocouple developed in this work has great potential for practical applications in high temperature sensing in harsh environments.

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GB/T 7714 Liu, Dan , Shi, Peng , Ren, Wei et al. A new kind of thermocouple made of p-type and n-type semi-conductive oxides with giant thermoelectric voltage for high temperature sensing [J]. | JOURNAL OF MATERIALS CHEMISTRY C , 2018 , 6 (13) : 3206-3211 .
MLA Liu, Dan et al. "A new kind of thermocouple made of p-type and n-type semi-conductive oxides with giant thermoelectric voltage for high temperature sensing" . | JOURNAL OF MATERIALS CHEMISTRY C 6 . 13 (2018) : 3206-3211 .
APA Liu, Dan , Shi, Peng , Ren, Wei , Liu, Yantao , Niu, Gang , Liu, Ming et al. A new kind of thermocouple made of p-type and n-type semi-conductive oxides with giant thermoelectric voltage for high temperature sensing . | JOURNAL OF MATERIALS CHEMISTRY C , 2018 , 6 (13) , 3206-3211 .
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A Highly Thermostable In2O3/ITO Thin Film Thermocouple Prepared via Screen Printing for High Temperature Measurements EI SCIE PubMed Scopus
期刊论文 | 2018 , 18 (4) | SENSORS
WoS CC Cited Count: 2
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Abstract :

An In2O3/ITO thin film thermocouple was prepared via screen printing. Glass additives were added to improve the sintering process and to increase the density of the In2O3/ITO films. The surface and cross-sectional images indicate that both the grain size and densification of the ITO and In2O3 films increased with the increase in annealing time. The thermoelectric voltage of the In2O3/ITO thermocouple was 53.5 mV at 1270 degrees C at the hot junction. The average Seebeck coefficient of the thermocouple was calculated as 44.5 mu V/degrees C. The drift rate of the In2O3/ITO thermocouple was 5.44 degrees C/h at a measuring time of 10 h at 1270 degrees C.

Keyword :

screen printing thermocouple thermoelectric response Seebeck coefficient

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GB/T 7714 Liu, Yantao , Ren, Wei , Shi, Peng et al. A Highly Thermostable In2O3/ITO Thin Film Thermocouple Prepared via Screen Printing for High Temperature Measurements [J]. | SENSORS , 2018 , 18 (4) .
MLA Liu, Yantao et al. "A Highly Thermostable In2O3/ITO Thin Film Thermocouple Prepared via Screen Printing for High Temperature Measurements" . | SENSORS 18 . 4 (2018) .
APA Liu, Yantao , Ren, Wei , Shi, Peng , Liu, Dan , Zhang, Yijun , Liu, Ming et al. A Highly Thermostable In2O3/ITO Thin Film Thermocouple Prepared via Screen Printing for High Temperature Measurements . | SENSORS , 2018 , 18 (4) .
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Single Crystal Growth and Hierarchical Ferroelectric Domain Structure of (1-x)BiFeO3-xPbTiO(3) Solid Solutions EI SCIE Scopus
期刊论文 | 2018 , 18 (8) , 4503-4510 | CRYSTAL GROWTH & DESIGN
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Besides outstanding multiferroic performance, BiFeO3 has recently demonstrated a potential for novel promising applications in domain wall nanoelectronics employing domain walls with different functional properties. Rarely observed in ferroelectrics, charged domain walls are of special interest for such applications as they possess enhanced electric conductivity. In this work, single crystals of the multiferroic (1-x)BiFeO3-xPbTiO(3) solid solution were successfully grown using a flux method. Structural characterization by X-ray diffraction confirmed perovskite rhombohedral R3c and tetragonal P4mm phases in crystals with x approximate to 0.2 and x approximate to 0.6, respectively. The domain structure of crystals was established with the help of polarized light microscopy, scanning electron microscopy, and piezoresponse force microscopy. In tetragonal crystals, a complex hierarchical structure of 90 degrees lamella domains is observed with the thickness of lamellae varying from dozens of nanometers to dozens of micrometers. In the rhombohedral composition, twin 109 degrees domains are realized with the domain width of about several micrometers. Besides, the nano- and submicrometer sized rounded 180 degrees domains are embedded randomly among twin domains in both tetragonal and rhombohedral crystals. Mechanical and electrical compatibility conditions are satisfied for all observed 90 degrees and 109 degrees domain walls. However, the 180 degrees walls in tetragonal crystals are proved to be charged. Successful fabrication of high-quality single crystals with the desirable structures of charged and uncharged domain walls can enhance the multiferroic performance and also open a door to explore promising domain boundaries related phenomena.

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GB/T 7714 Zhuang, Jian , Bokov, Alexei A. , Zhang, Nan et al. Single Crystal Growth and Hierarchical Ferroelectric Domain Structure of (1-x)BiFeO3-xPbTiO(3) Solid Solutions [J]. | CRYSTAL GROWTH & DESIGN , 2018 , 18 (8) : 4503-4510 .
MLA Zhuang, Jian et al. "Single Crystal Growth and Hierarchical Ferroelectric Domain Structure of (1-x)BiFeO3-xPbTiO(3) Solid Solutions" . | CRYSTAL GROWTH & DESIGN 18 . 8 (2018) : 4503-4510 .
APA Zhuang, Jian , Bokov, Alexei A. , Zhang, Nan , Zhang, Jie , Zhao, Jinyan , Yang, Shuming et al. Single Crystal Growth and Hierarchical Ferroelectric Domain Structure of (1-x)BiFeO3-xPbTiO(3) Solid Solutions . | CRYSTAL GROWTH & DESIGN , 2018 , 18 (8) , 4503-4510 .
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Fabrication and characterization of La0.8Sr0.2CrO3/In2O3 thin film thermocouple for high temperature sensing EI SCIE Scopus
期刊论文 | 2018 , 280 , 459-465 | SENSORS AND ACTUATORS A-PHYSICAL
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La0.8Sr0.2CrO3/In2O3 ceramic-based thin film thermocouple (TFTC) was successfully fabricated by using radio frequency (RF) sputtering method. The phases structures and morphologies of La0.8Sr0.2CrO3 and In2O3 thin films were investigated by XRD and SEM, respectively. La0.8Sr0.2CrO3 thin film showed orthorhombic phase and shuttle structure through post-annealing. The crystalization properties of In2O3 thin film were enhanced with the post-annealing. At the same time, their electrical conductivities were improved with the post-annealing process. When the thermoelectric properties of La0.8Sr0.2CrO3 and In2O3 were investigated by coupling with Pt thin film electrodes, both of them showed good linear relationship with temperature difference. The TFTC fabricated by La0.8Sr0.2CrO3 and In2O3 thin films showed very good performance with good stable, reproducible thermoelectric voltage, and high sensitivity at higher temperature. The sensitivity of La0.8Sr0.2CrO3/In2O3 thin film thermocouple was 305.8 mu V/degrees C. The dynamic thermal response of the TFTC demonstrated that it could monitor the real-time and in-situ temperature successfully. (C) 2018 Elsevier B.V. All rights reserved.

Keyword :

La0.8Sr0.2CrO3 High temperature High sensitivity In2O3 TFTCs

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GB/T 7714 Liu, Dan , Shi, Peng , Ren, Wei et al. Fabrication and characterization of La0.8Sr0.2CrO3/In2O3 thin film thermocouple for high temperature sensing [J]. | SENSORS AND ACTUATORS A-PHYSICAL , 2018 , 280 : 459-465 .
MLA Liu, Dan et al. "Fabrication and characterization of La0.8Sr0.2CrO3/In2O3 thin film thermocouple for high temperature sensing" . | SENSORS AND ACTUATORS A-PHYSICAL 280 (2018) : 459-465 .
APA Liu, Dan , Shi, Peng , Ren, Wei , Liu, Yantao , Liu, Ming , Zhang, Yijun et al. Fabrication and characterization of La0.8Sr0.2CrO3/In2O3 thin film thermocouple for high temperature sensing . | SENSORS AND ACTUATORS A-PHYSICAL , 2018 , 280 , 459-465 .
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Achieving Higher Strength and Sensitivity toward UV Light in Multifunctional Composites by Controlling the Thickness of Nanolayer on the Surface of Glass Fiber EI SCIE PubMed Scopus
期刊论文 | 2018 , 10 (27) , 23399-23405 | ACS APPLIED MATERIALS & INTERFACES
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The interphase between fiber and matrix plays an essential role in the performance of composites. Therefore, the ability to design or modify the interphase is a key technology needed to manufacture stronger and smarter composite. Recently, depositing nanomaterials onto the surface of the fiber has become a promising approach to optimize the interphase and composites. But, the modified composites have not reached the highest strength yet, because the determining parameters, such as thickness of the nanolayer, are hardly controlled by the mentioned methods in reported works. Here, we deposit conformal ZnO nanolayer with various thicknesses onto the surfaces of glass fibers via the atomic layer deposition (ALD) method and a tremendous enhancement of interfacial shear strength of composites is achieved. Importantly, a critical thickness of ZnO nanolayer is obtained for the first time, giving rise to a maximal relative enhancement in the interfacial strength, which is more than 200% of the control fiber. In addition, the single modified fiber exhibits a potential application as a flexible, transparent, in situ UV detector in composites. And, we find the UV-sensitivity also shows a strong correlation with the thickness of ZnO. To reveal the dependence of UV-sensitivity on thickness, a depletion thickness is estimated by a proposed model which is an essential guide to design the detectors with higher sensitivity. Consequently, such precise tailoring of the interphase offers an advanced way to improve and to flexibly control various macroscopic properties of multifunctional composites of the next generation.

Keyword :

interfacial strength UV detector atomic layer deposition multifunctional composites ZnO nanolayer

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GB/T 7714 Sun, Chao , Zhang, Jie , Gao, Shang-Lin et al. Achieving Higher Strength and Sensitivity toward UV Light in Multifunctional Composites by Controlling the Thickness of Nanolayer on the Surface of Glass Fiber [J]. | ACS APPLIED MATERIALS & INTERFACES , 2018 , 10 (27) : 23399-23405 .
MLA Sun, Chao et al. "Achieving Higher Strength and Sensitivity toward UV Light in Multifunctional Composites by Controlling the Thickness of Nanolayer on the Surface of Glass Fiber" . | ACS APPLIED MATERIALS & INTERFACES 10 . 27 (2018) : 23399-23405 .
APA Sun, Chao , Zhang, Jie , Gao, Shang-Lin , Zhang, Nan , Zhang, Yi-Jun , Zhuang, Jian et al. Achieving Higher Strength and Sensitivity toward UV Light in Multifunctional Composites by Controlling the Thickness of Nanolayer on the Surface of Glass Fiber . | ACS APPLIED MATERIALS & INTERFACES , 2018 , 10 (27) , 23399-23405 .
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Ionic Modulation of Interfacial Magnetism in Light Metal/Ferromagnetic Insulator Layered Nanostructures EI Scopus
期刊论文 | 2018 | Advanced Functional Materials
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© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim Ferromagnetic insulator thin film nanostructures are becoming the key component of the state-of-the-art spintronic devices, for instance, yttrium iron garnet (YIG) with low damping, high Curie temperature, and high resistivity is explored into many spin–orbit interactions related spintronic devices. Voltage modulation of YIG, with great practical/theoretical significance, thus can be widely applied in various YIG-based spintronics effects. Nevertheless, to manipulate ferromagnetism of YIG through electric field (E-field), instead of current, in an energy efficient manner is essentially challenging. Here, a YIG/Cu/Pt layered nanostructure with a weak spin–orbit coupling interaction is fabricated, and then the interfacial magnetism of the Cu and YIG is modified via ionic liquid gating method significantly. A record-high E-field-induced ferromagnetic resonance field shift of 1400 Oe is achieved in YIG (17 nm)/Cu (5 nm)/Pt (3 nm)/ionic liquid/Au capacitor layered nanostructures with a small voltage bias of 4.5 V. The giant magnetoelectric tunability comes from voltage-induced extra ferromagnetic ordering in Cu layer, confirmed by the first-principle calculation. This E-field modulation of interfacial magnetism between light metal and magnetic isolator may open a door toward compact, high-performance, and energy-efficient spintronic devices.

Keyword :

Cu magnetization ferromagnetic resonance ionic liquid gating magnetoelectric coupling yttrium iron garnet

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GB/T 7714 Guan, Mengmeng , Wang, Lei , Zhao, Shishun et al. Ionic Modulation of Interfacial Magnetism in Light Metal/Ferromagnetic Insulator Layered Nanostructures [J]. | Advanced Functional Materials , 2018 .
MLA Guan, Mengmeng et al. "Ionic Modulation of Interfacial Magnetism in Light Metal/Ferromagnetic Insulator Layered Nanostructures" . | Advanced Functional Materials (2018) .
APA Guan, Mengmeng , Wang, Lei , Zhao, Shishun , Peng, Bin , Su, Wei , He, Zhexi et al. Ionic Modulation of Interfacial Magnetism in Light Metal/Ferromagnetic Insulator Layered Nanostructures . | Advanced Functional Materials , 2018 .
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