Ferroelastic Phase Transition in Tl2SeO4

Yasumitsu Matsuo; Junko Hatori; Katsumi Irokawa; Masaru Komukae; Toshio Osaka; Yasuharu Makita

doi:10.1143/JPSJ.65.3931

Ferroelastic Phase Transition in Tl₂SeO₄

Yasumitsu Matsuo, Junko Hatori, Katsumi Irokawa, Masaru Komukae, Toshio Osaka, Yasuharu Makita

先端物理学科

研究成果: Article › 査読

8 被引用数 (Scopus)

抄録

Thermal, dielectric, X-ray and optical investigations of Tl₂SeO₄ were carried out above room temperature. It was found that Tl₂SeO₄ undergoes an improper ferroelastic phase transition at 388°C, and has spontaneous strain a_s -(e₂₂ -e₃₃)/2 = 1.97 × 10^-2 at room temperature. Tl₂SeO₄ shows domain structures composed of three kinds of orientations with two types of domain boundaries. The crystal belongs to the space group P6₃/mmc with the hexagonal unit cell parameters of a_h = 6.295(6) Å and c_h = 8.189(5) Å at 410°C. It was deduced that the improper ferroelastic phase transition is characterized by the symmetry change from P6₃/mmc to Pnam.

本文言語	English
ページ（範囲）	3931-3934
ページ数	4
ジャーナル	journal of the physical society of japan
巻	65
号	12
DOI	https://doi.org/10.1143/JPSJ.65.3931
出版ステータス	Published - 1996

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title = "Ferroelastic Phase Transition in Tl2SeO4",

abstract = "Thermal, dielectric, X-ray and optical investigations of Tl2SeO4 were carried out above room temperature. It was found that Tl2SeO4 undergoes an improper ferroelastic phase transition at 388°C, and has spontaneous strain as -(e22 -e33)/2 = 1.97 × 10-2 at room temperature. Tl2SeO4 shows domain structures composed of three kinds of orientations with two types of domain boundaries. The crystal belongs to the space group P63/mmc with the hexagonal unit cell parameters of ah = 6.295(6) {\AA} and ch = 8.189(5) {\AA} at 410°C. It was deduced that the improper ferroelastic phase transition is characterized by the symmetry change from P63/mmc to Pnam.",

keywords = "DSC, Dielectric constant, Domain structure, Ferroelastic, Phase transition, Thallium selenate, TlSeO, X-ray",

author = "Yasumitsu Matsuo and Junko Hatori and Katsumi Irokawa and Masaru Komukae and Toshio Osaka and Yasuharu Makita",

year = "1996",

doi = "10.1143/JPSJ.65.3931",

language = "English",

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pages = "3931--3934",

journal = "journal of the physical society of japan",

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publisher = "The Physical Society of Japan",

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TY - JOUR

T1 - Ferroelastic Phase Transition in Tl2SeO4

AU - Matsuo, Yasumitsu

AU - Hatori, Junko

AU - Irokawa, Katsumi

AU - Komukae, Masaru

AU - Osaka, Toshio

AU - Makita, Yasuharu

PY - 1996

Y1 - 1996

N2 - Thermal, dielectric, X-ray and optical investigations of Tl2SeO4 were carried out above room temperature. It was found that Tl2SeO4 undergoes an improper ferroelastic phase transition at 388°C, and has spontaneous strain as -(e22 -e33)/2 = 1.97 × 10-2 at room temperature. Tl2SeO4 shows domain structures composed of three kinds of orientations with two types of domain boundaries. The crystal belongs to the space group P63/mmc with the hexagonal unit cell parameters of ah = 6.295(6) Å and ch = 8.189(5) Å at 410°C. It was deduced that the improper ferroelastic phase transition is characterized by the symmetry change from P63/mmc to Pnam.

AB - Thermal, dielectric, X-ray and optical investigations of Tl2SeO4 were carried out above room temperature. It was found that Tl2SeO4 undergoes an improper ferroelastic phase transition at 388°C, and has spontaneous strain as -(e22 -e33)/2 = 1.97 × 10-2 at room temperature. Tl2SeO4 shows domain structures composed of three kinds of orientations with two types of domain boundaries. The crystal belongs to the space group P63/mmc with the hexagonal unit cell parameters of ah = 6.295(6) Å and ch = 8.189(5) Å at 410°C. It was deduced that the improper ferroelastic phase transition is characterized by the symmetry change from P63/mmc to Pnam.

KW - DSC

KW - Dielectric constant

KW - Domain structure

KW - Ferroelastic

KW - Phase transition

KW - Thallium selenate

KW - TlSeO

KW - X-ray

UR - https://www.scopus.com/pages/publications/0030343947

U2 - 10.1143/JPSJ.65.3931

DO - 10.1143/JPSJ.65.3931

M3 - Article

AN - SCOPUS:0030343947

SN - 0031-9015

VL - 65

SP - 3931

EP - 3934

JO - journal of the physical society of japan

JF - journal of the physical society of japan

IS - 12

ER -

Ferroelastic Phase Transition in Tl2SeO4

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Ferroelastic Phase Transition in Tl₂SeO₄