Neutron powder diffraction study of (ND4)2SeCl6 under high pressure

O. Yamamuro; K. Okishiro; T. Matsuo; T. Ohta; Y. Kume; R. M. Ibberson

doi:10.1016/S0921-4526(97)00621-2

Neutron powder diffraction study of (ND₄)₂SeCl₆ under high pressure

O. Yamamuro, K. Okishiro, T. Matsuo, T. Ohta, Y. Kume, R. M. Ibberson

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

2 Scopus citations

Abstract

The phase transition (T_trs = 48 K) of (ND₄)₂SeCl₆, which exhibits a strong isotope effect, has been studied by neutron powder diffraction under high pressure. Data of the high-temperature phase were collected on HRPD at ISIS under helium gas pressure of 480 MPa at 63 K. The Rietveld analysis and Fourier contour map revealed that the D atom of the ND₄⁺ ion is broadly disordered around the C₃-axis of the cubic lattice at lower pressure and tends to be localized on the axis at higher pressure.

Original language	English
Pages (from-to)	466-468
Number of pages	3
Journal	Physica B: Physics of Condensed Matter
Volume	241-243
DOIs	https://doi.org/10.1016/S0921-4526(97)00621-2
State	Published - 1997
Externally published	Yes

Keywords

Isotope effect
Neutron powder diffraction
Orientational disorder
Phase transition

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10.1016/S0921-4526(97)00621-2

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title = "Neutron powder diffraction study of (ND4)2SeCl6 under high pressure",

abstract = "The phase transition (Ttrs = 48 K) of (ND4)2SeCl6, which exhibits a strong isotope effect, has been studied by neutron powder diffraction under high pressure. Data of the high-temperature phase were collected on HRPD at ISIS under helium gas pressure of 480 MPa at 63 K. The Rietveld analysis and Fourier contour map revealed that the D atom of the ND4+ ion is broadly disordered around the C3-axis of the cubic lattice at lower pressure and tends to be localized on the axis at higher pressure.",

keywords = "Isotope effect, Neutron powder diffraction, Orientational disorder, Phase transition",

author = "O. Yamamuro and K. Okishiro and T. Matsuo and T. Ohta and Y. Kume and Ibberson, {R. M.}",

year = "1997",

doi = "10.1016/S0921-4526(97)00621-2",

language = "English",

volume = "241-243",

pages = "466--468",

journal = "Physica B: Physics of Condensed Matter",

issn = "0921-4526",

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TY - JOUR

T1 - Neutron powder diffraction study of (ND4)2SeCl6 under high pressure

AU - Yamamuro, O.

AU - Okishiro, K.

AU - Matsuo, T.

AU - Ohta, T.

AU - Kume, Y.

AU - Ibberson, R. M.

PY - 1997

Y1 - 1997

N2 - The phase transition (Ttrs = 48 K) of (ND4)2SeCl6, which exhibits a strong isotope effect, has been studied by neutron powder diffraction under high pressure. Data of the high-temperature phase were collected on HRPD at ISIS under helium gas pressure of 480 MPa at 63 K. The Rietveld analysis and Fourier contour map revealed that the D atom of the ND4+ ion is broadly disordered around the C3-axis of the cubic lattice at lower pressure and tends to be localized on the axis at higher pressure.

AB - The phase transition (Ttrs = 48 K) of (ND4)2SeCl6, which exhibits a strong isotope effect, has been studied by neutron powder diffraction under high pressure. Data of the high-temperature phase were collected on HRPD at ISIS under helium gas pressure of 480 MPa at 63 K. The Rietveld analysis and Fourier contour map revealed that the D atom of the ND4+ ion is broadly disordered around the C3-axis of the cubic lattice at lower pressure and tends to be localized on the axis at higher pressure.

KW - Isotope effect

KW - Neutron powder diffraction

KW - Orientational disorder

KW - Phase transition

UR - http://www.scopus.com/inward/record.url?scp=0031365522&partnerID=8YFLogxK

U2 - 10.1016/S0921-4526(97)00621-2

DO - 10.1016/S0921-4526(97)00621-2

M3 - Article

AN - SCOPUS:0031365522

SN - 0921-4526

VL - 241-243

SP - 466

EP - 468

JO - Physica B: Physics of Condensed Matter

JF - Physica B: Physics of Condensed Matter

ER -

Neutron powder diffraction study of (ND₄)₂SeCl₆ under high pressure

Abstract

Keywords

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