Multiferroic properties in orthorhombic rmno3 (R＝dy, tb, and gd) under high pressures

Takuya Aoyama

doi:10.4131/jshpreview.29.138

Multiferroic properties in orthorhombic rmno₃ (R＝dy, tb, and gd) under high pressures

Takuya Aoyama

SCI - Physics

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

Abstract

The hydrostatic pressure eŠect on multiferroic properties of rare-earth manganites RMnO₃ (R＝Dy, Tb, and Gd) with the Pbnm orthorhombic structure was investigated by using a diamond anvil cell. Under high pressures, all of these manganites were found to exhibit ferroelectricity in which spontaneous polarization (≈10⁰ nC cm^－2) develops along the a axis. The application of a magnetic field B along the a axis to the high-pressure ferroelectric phase causes a drastic change in the electric polarization P. Especially in GdMnO₃, the B-induced change in P reached DP(B)＝1.3 nC cm^－2. A possible origin of the observed R-dependent pressure eŠect is discussed.

Original language	English
Pages (from-to)	138-143
Number of pages	6
Journal	Review of High Pressure Science and Technology/Koatsuryoku No Kagaku To Gijutsu
Volume	29
Issue number	2
DOIs	https://doi.org/10.4131/jshpreview.29.138
Publication status	Published - 2019

Keywords

Diamond anvil cell
Dielectric constant
Multiferroics］
Phase transition

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10.4131/jshpreview.29.138

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title = "Multiferroic properties in orthorhombic rmno3 (R＝dy, tb, and gd) under high pressures",

abstract = "The hydrostatic pressure e{\v S}ect on multiferroic properties of rare-earth manganites RMnO3 (R＝Dy, Tb, and Gd) with the Pbnm orthorhombic structure was investigated by using a diamond anvil cell. Under high pressures, all of these manganites were found to exhibit ferroelectricity in which spontaneous polarization (≈100 nC cm－2) develops along the a axis. The application of a magnetic field B along the a axis to the high-pressure ferroelectric phase causes a drastic change in the electric polarization P. Especially in GdMnO3, the B-induced change in P reached DP(B)＝1.3 nC cm－2. A possible origin of the observed R-dependent pressure e{\v S}ect is discussed.",

keywords = "Diamond anvil cell, Dielectric constant, Multiferroics］, Phase transition",

author = "Takuya Aoyama",

year = "2019",

doi = "10.4131/jshpreview.29.138",

language = "English",

volume = "29",

pages = "138--143",

journal = "Review of High Pressure Science and Technology/Koatsuryoku No Kagaku To Gijutsu",

issn = "0917-639X",

publisher = "Japan Society of High Pressure Science and Technology",

number = "2",

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TY - JOUR

T1 - Multiferroic properties in orthorhombic rmno3 (R＝dy, tb, and gd) under high pressures

AU - Aoyama, Takuya

PY - 2019

Y1 - 2019

N2 - The hydrostatic pressure eŠect on multiferroic properties of rare-earth manganites RMnO3 (R＝Dy, Tb, and Gd) with the Pbnm orthorhombic structure was investigated by using a diamond anvil cell. Under high pressures, all of these manganites were found to exhibit ferroelectricity in which spontaneous polarization (≈100 nC cm－2) develops along the a axis. The application of a magnetic field B along the a axis to the high-pressure ferroelectric phase causes a drastic change in the electric polarization P. Especially in GdMnO3, the B-induced change in P reached DP(B)＝1.3 nC cm－2. A possible origin of the observed R-dependent pressure eŠect is discussed.

AB - The hydrostatic pressure eŠect on multiferroic properties of rare-earth manganites RMnO3 (R＝Dy, Tb, and Gd) with the Pbnm orthorhombic structure was investigated by using a diamond anvil cell. Under high pressures, all of these manganites were found to exhibit ferroelectricity in which spontaneous polarization (≈100 nC cm－2) develops along the a axis. The application of a magnetic field B along the a axis to the high-pressure ferroelectric phase causes a drastic change in the electric polarization P. Especially in GdMnO3, the B-induced change in P reached DP(B)＝1.3 nC cm－2. A possible origin of the observed R-dependent pressure eŠect is discussed.

KW - Diamond anvil cell

KW - Dielectric constant

KW - Multiferroics］

KW - Phase transition

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JO - Review of High Pressure Science and Technology/Koatsuryoku No Kagaku To Gijutsu

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ER -

Multiferroic properties in orthorhombic rmno₃ (R＝dy, tb, and gd) under high pressures

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Keywords

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