A New High Pressure Phase and the Equation of State of YbH2

J. Staun Olsen; B. Buras; Leif Gerward; B. Johansson; Bente Lebech; Hans Lomholt Skriver; S. Stenstrup

doi:10.1088/0031-8949/29/5/016

A New High Pressure Phase and the Equation of State of YbH2

J. Staun Olsen, B. Buras, Leif Gerward, B. Johansson, Bente Lebech, Hans Lomholt Skriver, S. Stenstrup

Department of Physics

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

High-pressure X-ray diffraction studies have been performed on YbH2 up to 28 GPa. A first order phase transition from an orthorhombic structure to a collapsed hexagonal structure with c/a = 1.34 has been observed at about 15 GPa. The transition is accompanied by a 5.2% decrease in volume. Fitting the V(P) data to Murnaghan's equation of state yields the bulk modulus B0 = 40.2 GPa and its pressure derivative B'0 = 4.75 for the orthorhombic phase. For the hexagonal phase we find the bulk modulus to be B = B0 = 138 GPa independent of pressure, i.e. B'0 = 0.

Original language	English
Journal	Physica Scripta
Volume	29
Issue number	5
Pages (from-to)	503-507
ISSN	0031-8949
DOIs	https://doi.org/10.1088/0031-8949/29/5/016
Publication status	Published - 1984

Access to Document

10.1088/0031-8949/29/5/016

OpenUrl availability

Full text

Cite this

@article{12da321fe4d14f7aab584a62d96b1cc3,

title = "A New High Pressure Phase and the Equation of State of YbH2",

abstract = "High-pressure X-ray diffraction studies have been performed on YbH2 up to 28 GPa. A first order phase transition from an orthorhombic structure to a collapsed hexagonal structure with c/a = 1.34 has been observed at about 15 GPa. The transition is accompanied by a 5.2% decrease in volume. Fitting the V(P) data to Murnaghan's equation of state yields the bulk modulus B0 = 40.2 GPa and its pressure derivative B'0 = 4.75 for the orthorhombic phase. For the hexagonal phase we find the bulk modulus to be B = B0 = 138 GPa independent of pressure, i.e. B'0 = 0.",

author = "{Staun Olsen}, J. and B. Buras and Leif Gerward and B. Johansson and Bente Lebech and Skriver, {Hans Lomholt} and S. Stenstrup",

year = "1984",

doi = "10.1088/0031-8949/29/5/016",

language = "English",

volume = "29",

pages = "503--507",

journal = "Physica Scripta",

issn = "0031-8949",

publisher = "IOP Publishing",

number = "5",

}

TY - JOUR

T1 - A New High Pressure Phase and the Equation of State of YbH2

AU - Staun Olsen, J.

AU - Buras, B.

AU - Gerward, Leif

AU - Johansson, B.

AU - Lebech, Bente

AU - Skriver, Hans Lomholt

AU - Stenstrup, S.

PY - 1984

Y1 - 1984

N2 - High-pressure X-ray diffraction studies have been performed on YbH2 up to 28 GPa. A first order phase transition from an orthorhombic structure to a collapsed hexagonal structure with c/a = 1.34 has been observed at about 15 GPa. The transition is accompanied by a 5.2% decrease in volume. Fitting the V(P) data to Murnaghan's equation of state yields the bulk modulus B0 = 40.2 GPa and its pressure derivative B'0 = 4.75 for the orthorhombic phase. For the hexagonal phase we find the bulk modulus to be B = B0 = 138 GPa independent of pressure, i.e. B'0 = 0.

AB - High-pressure X-ray diffraction studies have been performed on YbH2 up to 28 GPa. A first order phase transition from an orthorhombic structure to a collapsed hexagonal structure with c/a = 1.34 has been observed at about 15 GPa. The transition is accompanied by a 5.2% decrease in volume. Fitting the V(P) data to Murnaghan's equation of state yields the bulk modulus B0 = 40.2 GPa and its pressure derivative B'0 = 4.75 for the orthorhombic phase. For the hexagonal phase we find the bulk modulus to be B = B0 = 138 GPa independent of pressure, i.e. B'0 = 0.

U2 - 10.1088/0031-8949/29/5/016

DO - 10.1088/0031-8949/29/5/016

M3 - Journal article

SN - 0031-8949

VL - 29

SP - 503

EP - 507

JO - Physica Scripta

JF - Physica Scripta

IS - 5

ER -

A New High Pressure Phase and the Equation of State of YbH2

Abstract

Access to Document

OpenUrl availability

Fingerprint

Cite this