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, Thomas O Mason, M. Seabaugh

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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.

Original languageEnglish
Pages (from-to)377-388
Number of pages12
JournalPhysica C: Superconductivity and its Applications
Volume229
Issue number3-4
DOIs
Publication statusPublished - Aug 15 1994

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bulk modulus
Compressibility
compressibility
Elastic moduli
Neutron powder diffraction
Hydrostatic pressure
cells
hydrostatic pressure
gas pressure
Crystal structure
Gases
neutrons
Crystals
crystal structure
diffraction
crystals

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Kamiyama, T., Izumi, F., Takahashi, H., Jorgensen, J. D., Dabrowski, B., Hitterman, R. L., ... Seabaugh, M. (1994). Pressure-induced structural changes in Nd2-xCexCuO4 (x = 0 and 0.165). Physica C: Superconductivity and its Applications, 229(3-4), 377-388. https://doi.org/10.1016/0921-4534(94)90521-5

Pressure-induced structural changes in Nd2-xCexCuO4 (x = 0 and 0.165). / Kamiyama, T.; Izumi, F.; Takahashi, H.; Jorgensen, J. D.; Dabrowski, B.; Hitterman, R. L.; Hinks, D. G.; Shaked, H.; Mason, Thomas O; Seabaugh, M.

In: Physica C: Superconductivity and its Applications, Vol. 229, No. 3-4, 15.08.1994, p. 377-388.

Research output: Contribution to journalArticle

Kamiyama, T, Izumi, F, Takahashi, H, Jorgensen, JD, Dabrowski, B, Hitterman, RL, Hinks, DG, Shaked, H, Mason, TO & Seabaugh, M 1994, 'Pressure-induced structural changes in Nd2-xCexCuO4 (x = 0 and 0.165)', Physica C: Superconductivity and its Applications, vol. 229, no. 3-4, pp. 377-388. https://doi.org/10.1016/0921-4534(94)90521-5
Kamiyama T, Izumi F, Takahashi H, Jorgensen JD, Dabrowski B, Hitterman RL et al. Pressure-induced structural changes in Nd2-xCexCuO4 (x = 0 and 0.165). Physica C: Superconductivity and its Applications. 1994 Aug 15;229(3-4):377-388. https://doi.org/10.1016/0921-4534(94)90521-5
Kamiyama, T. ; Izumi, F. ; Takahashi, H. ; Jorgensen, J. D. ; Dabrowski, B. ; Hitterman, R. L. ; Hinks, D. G. ; Shaked, H. ; Mason, Thomas O ; Seabaugh, M. / Pressure-induced structural changes in Nd2-xCexCuO4 (x = 0 and 0.165). In: Physica C: Superconductivity and its Applications. 1994 ; Vol. 229, No. 3-4. pp. 377-388.
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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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