Enhanced strain-induced magnetoelectric coupling in polarization-free Fe/BaTiO3 heterostructures

2021 ◽  
Author(s):  
Carlos de Oliveira Amorim ◽  
João S. Amaral ◽  
Vitor Amaral
Keyword(s):  
Magnetoelectric Coupling ◽  
Composite Approach ◽  
Magnetoelectric Materials ◽  
Enhanced Strain

The search for magnetoelectric materials typically revolves around the struggle to simultaneously coexist magnetic and ferroelectric orders in the same material, either using an intrinsic or extrinsic/composite approach. Via ab...

Investigation of electrical transport and magnetoelectric coupling of codoped ferrite–PbZr0.58Ti0.42O3 multiferroic nanocomposites

2019 ◽  
Vol 33 (05) ◽  
pp. 1950022 ◽  
Author(s):  
Sarit Chakraborty ◽  
S. K. Mandal ◽  
B. Saha
Keyword(s):  
Electrical Transport ◽  
Complex Impedance ◽  
Low Frequency ◽  
Interfacial Polarization ◽  
Phase Segregation ◽  
Impedance Analysis ◽  
Magnetoelectric Coupling ◽  
Dielectric Behavior ◽  
Complex Impedance Analysis ◽  
Magnetoelectric Materials

The multiferroic magnetoelectric materials have gained intensive research interest in the recent years due to their prospective applications. In this perspective, the thermally tunable complex impedance, dielectric behavior and room-temperature magnetoelectric coupling of xCo[Formula: see text]Ni[Formula: see text]Fe2O4–(1 - x)PbZr[Formula: see text]Ti[Formula: see text]O3 (x = 0.2, 0.3 and 0.5) nanocomposites have been investigated. A series of samples have been prepared by chemical pyrophoric reaction process. The structural characterization confirms the coexistence of two different types of phases, there is no phase segregation. The temperature-controlled complex impedance analysis reveals that grain boundaries and grain of the nanocomposites are playing a dominating role. The existence of Maxwell–Wagner interfacial polarization of the nanocomposites causes a high dielectric constant at low frequency. The calculated AC conductivity values with frequency at different temperatures follow the Jonscher’s power-law. A small polaronic hopping contributes largely to the conduction process of the decorated composite. The magnetostriction properties lead to the AC and DC magnetic field-dependent magnetoelectric coupling of the nanocomposites. The magnetoelectric coupling coefficient depends on the concentration of the piezomagnetic phase of the composites.

The Determination of the Magnetoelectric Coupling Coefficient in Ferroelectric–Ferromagnetic Composite Based on PZT–Ferrite

2013 ◽  
Vol 58 (4) ◽  
pp. 1401-1403 ◽  
Author(s):  
J.A. Bartkowska ◽  
R. Zachariasz ◽  
D. Bochenek ◽  
J. Ilczuk
Keyword(s):  
Dielectric Permittivity ◽  
Coupling Coefficient ◽  
Mean Field ◽  
Field Approximation ◽  
Theoretical Description ◽  
Magnetoelectric Coupling ◽  
Mean Field Approximation ◽  
Dielectric Measurements ◽  
Temperature Dependences ◽  
Multiferroic Composite

Abstract In the present work, the magnetoelectric coupling coefficient, from the temperature dependences of the dielectric permittivity for the multiferroic composite was determined. The research material was ferroelectric-ferromagnetic composite on the based PZT and ferrite. We investigated the temperature dependences of the dielectric permittivity (") for the different frequency of measurement’s field. From the dielectric measurements we determined the temperature of phase transition from ferroelectric to paraelectric phase. For the theoretical description of the temperature dependence of the dielectric constant, the Hamiltonian of Alcantara, Gehring and Janssen was used. To investigate the dielectric properties of the multiferroic composite this Hamiltonian was expressed under the mean-field approximation. Based on dielectric measurements and theoretical considerations, the values of the magnetoelectric coupling coefficient were specified.

Dynamic behavior of magnetoelectric coupling of CuFeO2 induced by a high magnetic field

2014 ◽  
Vol 115 (11) ◽  
pp. 114107 ◽  
Author(s):  
Nianming Xia ◽  
Liran Shi ◽  
Zhengcai Xia ◽  
Borong Chen ◽  
Zhao Jin ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Dynamic Behavior ◽  
High Magnetic Field ◽  
Magnetoelectric Coupling

scholarly journals All organic multiferroic magnetoelectric complexes with strong interfacial spin-dipole interaction

2021 ◽  
Vol 5 (1) ◽  
Author(s):  
Yuying Yang ◽  
Zhiyan Chen ◽  
Xiangqian Lu ◽  
Xiaotao Hao ◽  
Wei Qin
Keyword(s):  
Magnetic Field ◽  
Light Intensity ◽  
Room Temperature ◽  
Incident Light ◽  
Dipole Interaction ◽  
Interfacial Interaction ◽  
Magnetoelectric Coupling ◽  
Incident Light Intensity ◽  
Organic Ferromagnets ◽  
Magnetoelectric Coefficient

AbstractThe organic magnetoelectric complexes are beneficial for the development on flexible magnetoelectric devices in the future. In this work, we fabricated all organic multiferroic ferromagnetic/ferroelectric complexes to study magnetoelectric coupling at room temperature. Under the stimulus of external magnetic field, the localization of charge inside organic ferromagnets will be enhanced to affect spin–dipole interaction at organic multiferroic interfaces, where overall ferroelectric polarization is tuned to present an organic magnetoelectric coupling. Moreover, the magnetoelectric coupling of the organic ferromagnetic/ferroelectric complex is tightly dependent on incident light intensity. Decreasing light intensity, the dominated interfacial interaction will switch from spin–dipole to dipole–dipole interaction, which leads to the magnetoelectric coefficient changing from positive to negative in organic multiferroic magnetoelectric complexes.

Sensitivity enhanced strain sensor based on two-arm Vernier Effect

2021 ◽  
pp. 1-1
Author(s):  
Ji Liu ◽  
Pengyu Nan ◽  
Qin Tian ◽  
Xiaokun Sun ◽  
Hangting Yang ◽  
...  
Keyword(s):  
Strain Sensor ◽  
Enhanced Strain ◽  
Vernier Effect

scholarly journals Magnetoelectric materials and devices

APL Materials ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 041114
Author(s):  
Xianfeng Liang ◽  
Huaihao Chen ◽  
Nian X. Sun
Keyword(s):  
Magnetoelectric Materials
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