Magnetocapacitance effect in nonmultiferroic YFeO 3 single crystal

Z. X. Cheng; H. Shen; J. Y. Xu; P. Liu; S. J. Zhang; J. L. Wang; X. L. Wang; S. X. Dou

doi:10.1063/1.3681294

Magnetocapacitance effect in nonmultiferroic YFeO ₃ single crystal

Z. X. Cheng
, H. Shen
, J. Y. Xu
, P. Liu
, S. J. Zhang
, J. L. Wang
, X. L. Wang
, S. X. Dou

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

64 Citations (Scopus)

Abstract

YFeO ₃ single crystal displays two relaxor-like dielectric relaxations, one at low temperature (170 - 300 K) and one at high temperature (370 - 520 K), which are attributed to the activation of electrons and oxygen vacancies, respectively. Above the temperature at which electrons are activated, the sample displays a large magnetocapacitance effect. Comparison of the impedance Cole-Cole plots measured with and without applied magnetic field reveals that the occurrence of magnetocapacitance effect is accompanied with an increasing in DC conductivity under magnetic field after the activation of electrons, which is explained by the enhancement of electron jumping in Fe ²⁺-O-Fe ³⁺ chains by magnetic field. Thus the magnetocapacitance effect in YFeO ₃ single crystal can be explained by the combination of the Maxwell-Wagner space charge effect and/or magnetoresistance effect, depending on the frequency range. © 2012 American Institute of Physics.

Original language	English
Article number	034103
Journal	Journal of Applied Physics
Volume	111
Issue number	3
DOIs	https://doi.org/10.1063/1.3681294
Publication status	Published - 1 Feb 2012
Externally published	Yes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Funding

Z. X. Cheng thanks the Australian Research Council for supporting this work through a Future Fellowship. H. Shen and J. Y. Xu thank the Natural Science Foundation of China for support (No. 51002097).

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title = "Magnetocapacitance effect in nonmultiferroic YFeO 3 single crystal",

abstract = "YFeO 3 single crystal displays two relaxor-like dielectric relaxations, one at low temperature (170 - 300 K) and one at high temperature (370 - 520 K), which are attributed to the activation of electrons and oxygen vacancies, respectively. Above the temperature at which electrons are activated, the sample displays a large magnetocapacitance effect. Comparison of the impedance Cole-Cole plots measured with and without applied magnetic field reveals that the occurrence of magnetocapacitance effect is accompanied with an increasing in DC conductivity under magnetic field after the activation of electrons, which is explained by the enhancement of electron jumping in Fe 2+-O-Fe 3+ chains by magnetic field. Thus the magnetocapacitance effect in YFeO 3 single crystal can be explained by the combination of the Maxwell-Wagner space charge effect and/or magnetoresistance effect, depending on the frequency range. {\textcopyright} 2012 American Institute of Physics.",

author = "Cheng, \{Z. X.\} and H. Shen and Xu, \{J. Y.\} and P. Liu and Zhang, \{S. J.\} and Wang, \{J. L.\} and Wang, \{X. L.\} and Dou, \{S. X.\}",

note = "Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].",

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T1 - Magnetocapacitance effect in nonmultiferroic YFeO 3 single crystal

AU - Cheng, Z. X.

AU - Shen, H.

AU - Xu, J. Y.

AU - Liu, P.

AU - Zhang, S. J.

AU - Wang, J. L.

AU - Wang, X. L.

AU - Dou, S. X.

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2012/2/1

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N2 - YFeO 3 single crystal displays two relaxor-like dielectric relaxations, one at low temperature (170 - 300 K) and one at high temperature (370 - 520 K), which are attributed to the activation of electrons and oxygen vacancies, respectively. Above the temperature at which electrons are activated, the sample displays a large magnetocapacitance effect. Comparison of the impedance Cole-Cole plots measured with and without applied magnetic field reveals that the occurrence of magnetocapacitance effect is accompanied with an increasing in DC conductivity under magnetic field after the activation of electrons, which is explained by the enhancement of electron jumping in Fe 2+-O-Fe 3+ chains by magnetic field. Thus the magnetocapacitance effect in YFeO 3 single crystal can be explained by the combination of the Maxwell-Wagner space charge effect and/or magnetoresistance effect, depending on the frequency range. © 2012 American Institute of Physics.

AB - YFeO 3 single crystal displays two relaxor-like dielectric relaxations, one at low temperature (170 - 300 K) and one at high temperature (370 - 520 K), which are attributed to the activation of electrons and oxygen vacancies, respectively. Above the temperature at which electrons are activated, the sample displays a large magnetocapacitance effect. Comparison of the impedance Cole-Cole plots measured with and without applied magnetic field reveals that the occurrence of magnetocapacitance effect is accompanied with an increasing in DC conductivity under magnetic field after the activation of electrons, which is explained by the enhancement of electron jumping in Fe 2+-O-Fe 3+ chains by magnetic field. Thus the magnetocapacitance effect in YFeO 3 single crystal can be explained by the combination of the Maxwell-Wagner space charge effect and/or magnetoresistance effect, depending on the frequency range. © 2012 American Institute of Physics.

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M3 - RGC 21 - Publication in refereed journal

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JO - Journal of Applied Physics

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