Phase transition of NaGaO 2 at high pressure and high temperature

Kaixue Wang; Zili Kou; Huan Ma; Yanfei Wang; Shanmin Wang; Chao Xu; Junwei Guan; Duanwei He

doi:10.1016/j.ssc.2011.12.031

Phase transition of NaGaO ₂ at high pressure and high temperature

Kaixue Wang
, Zili Kou
, Huan Ma
, Yanfei Wang
, Shanmin Wang
, Chao Xu
, Junwei Guan
, Duanwei He

School of Aerospace Engineering

Sichuan University

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

4 Scopus citations

Abstract

This work presents a comprehensive study on phase transition in NaGaO ₂ under high pressure and temperature (PT) conditions. X-ray diffraction (XRD) was used to identify the phase composition of the recovered samples. Our results revealed that NaGaO ₂ could undergo a structural phase transition from orthorhombic β- NaGaO ₂ to hexagonal α- NaGaO ₂ under high pressure and temperature. The pressuretemperature phase boundaries of NaGaO ₂ were determined up to 5 GPa and 2073 K. The hexagonal α- NaGaO ₂ sample recovered from higher pressure and temperature exhibited a highly (003) preferred orientation. Besides, a reversible transition from α- to β- NaGaO ₂ was observed above 473 K under normal-pressure condition. The high-pressure melting curve of NaGaO ₂, for the first time, was measured by using in-situ thermal measurement.

Original language	English
Pages (from-to)	540-544
Number of pages	5
Journal	Solid State Communications
Volume	152
Issue number	6
DOIs	https://doi.org/10.1016/j.ssc.2011.12.031
State	Published - Mar 2012

Keywords

A. NaGaO
B. High-pressure
C. X-ray diffraction
D. Phase transition

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10.1016/j.ssc.2011.12.031

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title = "Phase transition of NaGaO 2 at high pressure and high temperature",

abstract = "This work presents a comprehensive study on phase transition in NaGaO 2 under high pressure and temperature (PT) conditions. X-ray diffraction (XRD) was used to identify the phase composition of the recovered samples. Our results revealed that NaGaO 2 could undergo a structural phase transition from orthorhombic β- NaGaO 2 to hexagonal α- NaGaO 2 under high pressure and temperature. The pressuretemperature phase boundaries of NaGaO 2 were determined up to 5 GPa and 2073 K. The hexagonal α- NaGaO 2 sample recovered from higher pressure and temperature exhibited a highly (003) preferred orientation. Besides, a reversible transition from α- to β- NaGaO 2 was observed above 473 K under normal-pressure condition. The high-pressure melting curve of NaGaO 2, for the first time, was measured by using in-situ thermal measurement.",

keywords = "A. NaGaO, B. High-pressure, C. X-ray diffraction, D. Phase transition",

author = "Kaixue Wang and Zili Kou and Huan Ma and Yanfei Wang and Shanmin Wang and Chao Xu and Junwei Guan and Duanwei He",

year = "2012",

month = mar,

doi = "10.1016/j.ssc.2011.12.031",

language = "英语",

volume = "152",

pages = "540--544",

journal = "Solid State Communications",

issn = "0038-1098",

publisher = "Elsevier Ltd",

number = "6",

}

TY - JOUR

T1 - Phase transition of NaGaO 2 at high pressure and high temperature

AU - Wang, Kaixue

AU - Kou, Zili

AU - Ma, Huan

AU - Wang, Yanfei

AU - Wang, Shanmin

AU - Xu, Chao

AU - Guan, Junwei

AU - He, Duanwei

PY - 2012/3

Y1 - 2012/3

N2 - This work presents a comprehensive study on phase transition in NaGaO 2 under high pressure and temperature (PT) conditions. X-ray diffraction (XRD) was used to identify the phase composition of the recovered samples. Our results revealed that NaGaO 2 could undergo a structural phase transition from orthorhombic β- NaGaO 2 to hexagonal α- NaGaO 2 under high pressure and temperature. The pressuretemperature phase boundaries of NaGaO 2 were determined up to 5 GPa and 2073 K. The hexagonal α- NaGaO 2 sample recovered from higher pressure and temperature exhibited a highly (003) preferred orientation. Besides, a reversible transition from α- to β- NaGaO 2 was observed above 473 K under normal-pressure condition. The high-pressure melting curve of NaGaO 2, for the first time, was measured by using in-situ thermal measurement.

AB - This work presents a comprehensive study on phase transition in NaGaO 2 under high pressure and temperature (PT) conditions. X-ray diffraction (XRD) was used to identify the phase composition of the recovered samples. Our results revealed that NaGaO 2 could undergo a structural phase transition from orthorhombic β- NaGaO 2 to hexagonal α- NaGaO 2 under high pressure and temperature. The pressuretemperature phase boundaries of NaGaO 2 were determined up to 5 GPa and 2073 K. The hexagonal α- NaGaO 2 sample recovered from higher pressure and temperature exhibited a highly (003) preferred orientation. Besides, a reversible transition from α- to β- NaGaO 2 was observed above 473 K under normal-pressure condition. The high-pressure melting curve of NaGaO 2, for the first time, was measured by using in-situ thermal measurement.

KW - A. NaGaO

KW - B. High-pressure

KW - C. X-ray diffraction

KW - D. Phase transition

UR - https://www.scopus.com/pages/publications/84862790720

U2 - 10.1016/j.ssc.2011.12.031

DO - 10.1016/j.ssc.2011.12.031

M3 - 文章

AN - SCOPUS:84862790720

SN - 0038-1098

VL - 152

SP - 540

EP - 544

JO - Solid State Communications

JF - Solid State Communications

IS - 6

ER -

Phase transition of NaGaO ₂ at high pressure and high temperature

Abstract

Keywords

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