Thermal expansion and pressure effect in MnWO4

R. P. Chaudhury; F. Yen; C. R. dela Cruz; B. Lorenz; Y. Q. Wang; Y. Y. Sun; C. W. Chu

doi:10.1016/j.physb.2007.10.327

Thermal expansion and pressure effect in MnWO₄

R. P. Chaudhury
, F. Yen
, C. R. dela Cruz
, B. Lorenz
, Y. Q. Wang
, Y. Y. Sun
, C. W. Chu

Executive Vice President

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

40 Citations (Scopus)

Abstract

MnWO₄ has attracted attention because of its ferroelectric property induced by frustrated helical spin order. Strong spin-lattice interaction is necessary to explain ferroelectricity associated with this type of magnetic order. We have conducted thermal expansion measurements along the a, b, c axes revealing the existence of strong anisotropic lattice anomalies at T₁ = 7.8 K, the temperature of the magnetic lock-in transition into a commensurate low-temperature (reentrant paraelectric) phase. The effect of hydrostatic pressure up to 1.8 GPa on the FE phase is investigated by measuring the dielectric constant and the FE polarization. The low-temperature commensurate and paraelectric phase is stabilized and the stability range of the ferroelectric phase is diminished under pressure.

Original language	English
Pages (from-to)	1428-1430
Number of pages	3
Journal	Physica B: Condensed Matter
Volume	403
Issue number	5-9
DOIs	https://doi.org/10.1016/j.physb.2007.10.327
Publication status	Published - 2008 Apr 1

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1016/j.physb.2007.10.327

Cite this

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title = "Thermal expansion and pressure effect in MnWO4",

abstract = "MnWO4 has attracted attention because of its ferroelectric property induced by frustrated helical spin order. Strong spin-lattice interaction is necessary to explain ferroelectricity associated with this type of magnetic order. We have conducted thermal expansion measurements along the a, b, c axes revealing the existence of strong anisotropic lattice anomalies at T1 = 7.8 K, the temperature of the magnetic lock-in transition into a commensurate low-temperature (reentrant paraelectric) phase. The effect of hydrostatic pressure up to 1.8 GPa on the FE phase is investigated by measuring the dielectric constant and the FE polarization. The low-temperature commensurate and paraelectric phase is stabilized and the stability range of the ferroelectric phase is diminished under pressure.",

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AU - Chaudhury, R. P.

AU - Yen, F.

AU - dela Cruz, C. R.

AU - Lorenz, B.

AU - Wang, Y. Q.

AU - Sun, Y. Y.

AU - Chu, C. W.

PY - 2008/4/1

Y1 - 2008/4/1

N2 - MnWO4 has attracted attention because of its ferroelectric property induced by frustrated helical spin order. Strong spin-lattice interaction is necessary to explain ferroelectricity associated with this type of magnetic order. We have conducted thermal expansion measurements along the a, b, c axes revealing the existence of strong anisotropic lattice anomalies at T1 = 7.8 K, the temperature of the magnetic lock-in transition into a commensurate low-temperature (reentrant paraelectric) phase. The effect of hydrostatic pressure up to 1.8 GPa on the FE phase is investigated by measuring the dielectric constant and the FE polarization. The low-temperature commensurate and paraelectric phase is stabilized and the stability range of the ferroelectric phase is diminished under pressure.

AB - MnWO4 has attracted attention because of its ferroelectric property induced by frustrated helical spin order. Strong spin-lattice interaction is necessary to explain ferroelectricity associated with this type of magnetic order. We have conducted thermal expansion measurements along the a, b, c axes revealing the existence of strong anisotropic lattice anomalies at T1 = 7.8 K, the temperature of the magnetic lock-in transition into a commensurate low-temperature (reentrant paraelectric) phase. The effect of hydrostatic pressure up to 1.8 GPa on the FE phase is investigated by measuring the dielectric constant and the FE polarization. The low-temperature commensurate and paraelectric phase is stabilized and the stability range of the ferroelectric phase is diminished under pressure.

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DO - 10.1016/j.physb.2007.10.327

M3 - Article

AN - SCOPUS:39849105381

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JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

IS - 5-9

ER -

Thermal expansion and pressure effect in MnWO₄

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