Phase transition of intermetallic TbPt at high temperature and high pressure

doi:10.1088/1361-648X/aaaf9b

CAS OpenIR > 中科院上海应用物理研究所2011-2018年

	Phase transition of intermetallic TbPt at high temperature and high pressure
	Qin, F ; Wu, X ; Yang, K ; Qin, S
	2018
发表期刊	JOURNAL OF PHYSICS-CONDENSED MATTER
ISSN	0953-8984
卷号	30 期号:14 页码:-
文章类型	期刊论文
摘要	Here we present synchrotron-based x-ray diffraction experiments combined with diamond anvil cell and laser heating techniques on the intermetallic rare earth compound TbPt (Pnma and Z = 4) up to 32.5 GPa and similar to 1800 K. The lattice parameters of TbPt exhibit continuous compression behavior up to 18.2 GPa without any evidence of phase transformation. Pressure-volume data were fitted to a third-order Birch-Murnaghan equation of state with V-0 = 175.5(2) angstrom(3), K-T0 = 110(5) GPa and K-T0 = 3.8(7). TbPt exhibits anisotropic compression with ss(a) > ss(b) > ss(c) and the ratio of axial compressibility is 2.50:1.26:1.00. A new monoclinic phase of TbPt assigned to the Pc or P2/c space group was observed at 32.5 GPa after laser heating at similar to 1800 K. This new phase is stable at high pressure and presented a quenchable property on decompression to ambient conditions. The pressure-volume relationship is well described by the second-order Birch-Murnaghan equation of state, which yields V-0 = 672(4) angstrom(3), K-T0 = 123(6) GPa, which is about similar to 14% more compressible than the orthorhombic TbPt. Our results provide more information on the structure and elastic property view, and thus a better understanding of the physical properties related to magnetic structure in some intermetallic rare earth alloys.
关键词	Powder Diffraction Magnetic-properties X-ray Lif
DOI	10.1088/1361-648X/aaaf9b
收录类别	SCI
语种	英语
WOS记录号	WOS:000427389700001
引用统计
文献类型	期刊论文
条目标识符	http://ir.sinap.ac.cn/handle/331007/29101
专题	中科院上海应用物理研究所2011-2018年
作者单位	1.Qin, F 2.Wu, X 3.Yang, K 4.Qin, S
推荐引用方式 GB/T 7714	Qin, F,Wu, X,Yang, K,et al. Phase transition of intermetallic TbPt at high temperature and high pressure[J]. JOURNAL OF PHYSICS-CONDENSED MATTER,2018,30(14):-.
APA	Qin, F,Wu, X,Yang, K,&Qin, S.(2018).Phase transition of intermetallic TbPt at high temperature and high pressure.JOURNAL OF PHYSICS-CONDENSED MATTER,30(14),-.
MLA	Qin, F,et al."Phase transition of intermetallic TbPt at high temperature and high pressure".JOURNAL OF PHYSICS-CONDENSED MATTER 30.14(2018):-.

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