Pressure-induced structural changes in Nd2-xCexCuO4 (x = 0 and 0.165)

T. Kamiyama; F. Izumi; H. Takahashi; J. D. Jorgensen; B. Dabrowski; R. L. Hitterman; D. G. Hinks; H. Shaked; T. O. Mason; M. Seabaugh

doi:10.1016/0921-4534(94)90521-5

Pressure-induced structural changes in Nd_2-xCe_xCuO₄ (x = 0 and 0.165)

T. Kamiyama^*, F. Izumi, H. Takahashi, J. D. Jorgensen, B. Dabrowski, R. L. Hitterman, D. G. Hinks, H. Shaked, T. O. Mason, M. Seabaugh

^*Corresponding author for this work

Materials Science and Engineering

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

21 Scopus citations

Abstract

The crystal structures of Nd₂CuO₄ and superconducting Nd_1.835Ce_0.165CuO₄ under hydrostatic pressure up to 0.6 GPa have been investigated by time-of-flight neutron powder diffraction with a He gas pressure cell. The a and c parameters and the volumes of the tetragonal unit cells decreased linearly with increasing pressure. The bulk moduli, K, are 134 GPa for Nd₂CuO₄ and 140 GPa for the Ce-doped sample. These K values lie between those of La_1.85Sr_0.15CuO₄ and La_1.82Ca_1.18Cu₂O₆. The compressibilities along the c axes were about 1.5 times as large as those along the a axes. The linear compressibilities along the a and c axes and the bulk moduli were compared with those calculated on the basis of a simple compression model proposed by Cornelius et al. The negligible effect of pressure on the T_c of Nd_2-xCe_xCuO₄ is discussed in connection with the crystal data obtained in this study.

Original language	English (US)
Pages (from-to)	377-388
Number of pages	12
Journal	Physica C: Superconductivity and its applications
Volume	229
Issue number	3-4
DOIs	https://doi.org/10.1016/0921-4534(94)90521-5
State	Published - Aug 15 1994

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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title = "Pressure-induced structural changes in Nd2-xCexCuO4 (x = 0 and 0.165)",

abstract = "The crystal structures of Nd2CuO4 and superconducting Nd1.835Ce0.165CuO4 under hydrostatic pressure up to 0.6 GPa have been investigated by time-of-flight neutron powder diffraction with a He gas pressure cell. The a and c parameters and the volumes of the tetragonal unit cells decreased linearly with increasing pressure. The bulk moduli, K, are 134 GPa for Nd2CuO4 and 140 GPa for the Ce-doped sample. These K values lie between those of La1.85Sr0.15CuO4 and La1.82Ca1.18Cu2O6. The compressibilities along the c axes were about 1.5 times as large as those along the a axes. The linear compressibilities along the a and c axes and the bulk moduli were compared with those calculated on the basis of a simple compression model proposed by Cornelius et al. The negligible effect of pressure on the Tc of Nd2-xCexCuO4 is discussed in connection with the crystal data obtained in this study.",

author = "T. Kamiyama and F. Izumi and H. Takahashi and Jorgensen, {J. D.} and B. Dabrowski and Hitterman, {R. L.} and Hinks, {D. G.} and H. Shaked and Mason, {T. O.} and M. Seabaugh",

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doi = "10.1016/0921-4534(94)90521-5",

language = "English (US)",

volume = "229",

pages = "377--388",

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TY - JOUR

T1 - Pressure-induced structural changes in Nd2-xCexCuO4 (x = 0 and 0.165)

AU - Kamiyama, T.

AU - Izumi, F.

AU - Takahashi, H.

AU - Jorgensen, J. D.

AU - Dabrowski, B.

AU - Hitterman, R. L.

AU - Hinks, D. G.

AU - Shaked, H.

AU - Mason, T. O.

AU - Seabaugh, M.

PY - 1994/8/15

Y1 - 1994/8/15

N2 - The crystal structures of Nd2CuO4 and superconducting Nd1.835Ce0.165CuO4 under hydrostatic pressure up to 0.6 GPa have been investigated by time-of-flight neutron powder diffraction with a He gas pressure cell. The a and c parameters and the volumes of the tetragonal unit cells decreased linearly with increasing pressure. The bulk moduli, K, are 134 GPa for Nd2CuO4 and 140 GPa for the Ce-doped sample. These K values lie between those of La1.85Sr0.15CuO4 and La1.82Ca1.18Cu2O6. The compressibilities along the c axes were about 1.5 times as large as those along the a axes. The linear compressibilities along the a and c axes and the bulk moduli were compared with those calculated on the basis of a simple compression model proposed by Cornelius et al. The negligible effect of pressure on the Tc of Nd2-xCexCuO4 is discussed in connection with the crystal data obtained in this study.

AB - The crystal structures of Nd2CuO4 and superconducting Nd1.835Ce0.165CuO4 under hydrostatic pressure up to 0.6 GPa have been investigated by time-of-flight neutron powder diffraction with a He gas pressure cell. The a and c parameters and the volumes of the tetragonal unit cells decreased linearly with increasing pressure. The bulk moduli, K, are 134 GPa for Nd2CuO4 and 140 GPa for the Ce-doped sample. These K values lie between those of La1.85Sr0.15CuO4 and La1.82Ca1.18Cu2O6. The compressibilities along the c axes were about 1.5 times as large as those along the a axes. The linear compressibilities along the a and c axes and the bulk moduli were compared with those calculated on the basis of a simple compression model proposed by Cornelius et al. The negligible effect of pressure on the Tc of Nd2-xCexCuO4 is discussed in connection with the crystal data obtained in this study.

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JO - Physica C: Superconductivity and its applications

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ER -

Pressure-induced structural changes in Nd_2-xCe_xCuO₄ (x = 0 and 0.165)

Abstract

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