Magnetic-field-induced ferroelectric state in DyFeO3

Y. Tokunaga; S. Iguchi; T. Arima; Y. Tokura

doi:10.1103/PhysRevLett.101.097205

Magnetic-field-induced ferroelectric state in DyFeO3

Y. Tokunaga, S. Iguchi, T. Arima, Y. Tokura

Research output: Contribution to journal › Article › peer-review

306 Citations (Scopus)

Abstract

Versatile and gigantic magnetoelectric (ME) phenomena have been found for a single crystal of DyFeO3. Below the antiferromagnetic ordering temperature of Dy moments, a linear-ME tensor component as large as αzz∼2.4×10- 2esu is observed. It is also revealed that application of magnetic field along the c axis induces a multiferroic (weakly ferromagnetic and ferroelectric) phase with magnetization [ 0.5μB/formula unit (f.u.)] and electric polarization ( 0.2μC/cm2) both along the c axis. Exchange striction working between adjacent Fe3+ and Dy3+ layers with the respective layered antiferromagnetic components is proposed as the origin of the ferroelectric polarization in the multiferroic phase.

Original language	English
Article number	097205
Journal	Physical Review Letters
Volume	101
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevLett.101.097205
Publication status	Published - 2008 Aug 29
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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title = "Magnetic-field-induced ferroelectric state in DyFeO3",

abstract = "Versatile and gigantic magnetoelectric (ME) phenomena have been found for a single crystal of DyFeO3. Below the antiferromagnetic ordering temperature of Dy moments, a linear-ME tensor component as large as αzz∼2.4×10- 2esu is observed. It is also revealed that application of magnetic field along the c axis induces a multiferroic (weakly ferromagnetic and ferroelectric) phase with magnetization [ 0.5μB/formula unit (f.u.)] and electric polarization ( 0.2μC/cm2) both along the c axis. Exchange striction working between adjacent Fe3+ and Dy3+ layers with the respective layered antiferromagnetic components is proposed as the origin of the ferroelectric polarization in the multiferroic phase.",

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AU - Iguchi, S.

AU - Arima, T.

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N2 - Versatile and gigantic magnetoelectric (ME) phenomena have been found for a single crystal of DyFeO3. Below the antiferromagnetic ordering temperature of Dy moments, a linear-ME tensor component as large as αzz∼2.4×10- 2esu is observed. It is also revealed that application of magnetic field along the c axis induces a multiferroic (weakly ferromagnetic and ferroelectric) phase with magnetization [ 0.5μB/formula unit (f.u.)] and electric polarization ( 0.2μC/cm2) both along the c axis. Exchange striction working between adjacent Fe3+ and Dy3+ layers with the respective layered antiferromagnetic components is proposed as the origin of the ferroelectric polarization in the multiferroic phase.

AB - Versatile and gigantic magnetoelectric (ME) phenomena have been found for a single crystal of DyFeO3. Below the antiferromagnetic ordering temperature of Dy moments, a linear-ME tensor component as large as αzz∼2.4×10- 2esu is observed. It is also revealed that application of magnetic field along the c axis induces a multiferroic (weakly ferromagnetic and ferroelectric) phase with magnetization [ 0.5μB/formula unit (f.u.)] and electric polarization ( 0.2μC/cm2) both along the c axis. Exchange striction working between adjacent Fe3+ and Dy3+ layers with the respective layered antiferromagnetic components is proposed as the origin of the ferroelectric polarization in the multiferroic phase.

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