High-temperature structural evolution of hexagonal multiferroic YMnO 3 and YbMnO3

Il Kyoung Jeong; N. Hur; Th Proffen

doi:10.1107/S0021889807025101

High-temperature structural evolution of hexagonal multiferroic YMnO ₃ and YbMnO₃

Il Kyoung Jeong, N. Hur, Th Proffen

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48 Scopus citations

Abstract

Neutron powder diffraction studies on the structural evolution of hexagonal multiferroic YMnO₃ and YbMnO₃ from 1000 K to 1400 K, and from 1000 K to 1350 K, respectively, are presented. The temperature evolution of diffraction patterns suggests that YMnO₃ undergoes a phase transition to a non-polar structure above 1200 K, while YbMnO₃ remains ferroelectric up to 1350 K. Detailed structural parameters were obtained as a function of temperature from Rietveld refinements. Based on this result, the distinct differences in temperature behaviour between YMnO₃ and YbMnO₃, and the origin of the ferroelectricity in these hexagonal multiferroics are discussed.

Original language	English
Pages (from-to)	730-734
Number of pages	5
Journal	Journal of Applied Crystallography
Volume	40
Issue number	4
DOIs	https://doi.org/10.1107/S0021889807025101
State	Published - Jul 13 2007
Externally published	Yes

Keywords

Ferroelectric properties
Neutron diffraction
Phase transformations

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title = "High-temperature structural evolution of hexagonal multiferroic YMnO 3 and YbMnO3",

abstract = "Neutron powder diffraction studies on the structural evolution of hexagonal multiferroic YMnO3 and YbMnO3 from 1000 K to 1400 K, and from 1000 K to 1350 K, respectively, are presented. The temperature evolution of diffraction patterns suggests that YMnO3 undergoes a phase transition to a non-polar structure above 1200 K, while YbMnO3 remains ferroelectric up to 1350 K. Detailed structural parameters were obtained as a function of temperature from Rietveld refinements. Based on this result, the distinct differences in temperature behaviour between YMnO3 and YbMnO3, and the origin of the ferroelectricity in these hexagonal multiferroics are discussed.",

keywords = "Ferroelectric properties, Neutron diffraction, Phase transformations",

author = "Jeong, {Il Kyoung} and N. Hur and Th Proffen",

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T1 - High-temperature structural evolution of hexagonal multiferroic YMnO 3 and YbMnO3

AU - Jeong, Il Kyoung

AU - Hur, N.

AU - Proffen, Th

PY - 2007/7/13

Y1 - 2007/7/13

N2 - Neutron powder diffraction studies on the structural evolution of hexagonal multiferroic YMnO3 and YbMnO3 from 1000 K to 1400 K, and from 1000 K to 1350 K, respectively, are presented. The temperature evolution of diffraction patterns suggests that YMnO3 undergoes a phase transition to a non-polar structure above 1200 K, while YbMnO3 remains ferroelectric up to 1350 K. Detailed structural parameters were obtained as a function of temperature from Rietveld refinements. Based on this result, the distinct differences in temperature behaviour between YMnO3 and YbMnO3, and the origin of the ferroelectricity in these hexagonal multiferroics are discussed.

AB - Neutron powder diffraction studies on the structural evolution of hexagonal multiferroic YMnO3 and YbMnO3 from 1000 K to 1400 K, and from 1000 K to 1350 K, respectively, are presented. The temperature evolution of diffraction patterns suggests that YMnO3 undergoes a phase transition to a non-polar structure above 1200 K, while YbMnO3 remains ferroelectric up to 1350 K. Detailed structural parameters were obtained as a function of temperature from Rietveld refinements. Based on this result, the distinct differences in temperature behaviour between YMnO3 and YbMnO3, and the origin of the ferroelectricity in these hexagonal multiferroics are discussed.

KW - Ferroelectric properties

KW - Neutron diffraction

KW - Phase transformations

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DO - 10.1107/S0021889807025101

M3 - Article

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SN - 0021-8898

VL - 40

SP - 730

EP - 734

JO - Journal of Applied Crystallography

JF - Journal of Applied Crystallography

IS - 4

ER -

High-temperature structural evolution of hexagonal multiferroic YMnO ₃ and YbMnO₃

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Keywords

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