Structure, sound velocity, and thermal conductivity of the perovskite NdGaO3

A. I. Krivchikov; B. Ya Gorodilov; I. G. Kolobov; A. I. Erenburg; D. I. Savitskiï; S. B. Ubizskiï; I. M. Syvorotka; L. O. Vasilechko

doi:10.1063/1.593911

Structure, sound velocity, and thermal conductivity of the perovskite NdGaO₃

A. I. Krivchikov, B. Ya Gorodilov, I. G. Kolobov, A. I. Erenburg, D. I. Savitskiï, S. B. Ubizskiï, I. M. Syvorotka, L. O. Vasilechko

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14 Scopus citations

Abstract

X-ray (300 K) and ultrasonic (77-270 K) studies and measurements of the thermal conductivity (30-300 K) are carried out on single-crystal samples of NdGaO3 in different crystallographic directions. The values of the lattice parameters of NdGaO3 are refined. The sound velocities in the principal crystallographic directions are measured, and the elastic constants and Debye temperature are calculated. The observed anisotropy of the thermal conductivity is described in the framework of a gaskinetic model and is linked to the anisotropy of the interaction parameters of the acoustical and optical phonons.

Original language	English
Pages (from-to)	370-374
Number of pages	5
Journal	Low Temperature Physics
Volume	26
Issue number	5
DOIs	https://doi.org/10.1063/1.593911
State	Published - 1 Jan 2000
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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title = "Structure, sound velocity, and thermal conductivity of the perovskite NdGaO3",

abstract = "X-ray (300 K) and ultrasonic (77-270 K) studies and measurements of the thermal conductivity (30-300 K) are carried out on single-crystal samples of NdGaO3 in different crystallographic directions. The values of the lattice parameters of NdGaO3 are refined. The sound velocities in the principal crystallographic directions are measured, and the elastic constants and Debye temperature are calculated. The observed anisotropy of the thermal conductivity is described in the framework of a gaskinetic model and is linked to the anisotropy of the interaction parameters of the acoustical and optical phonons.",

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T1 - Structure, sound velocity, and thermal conductivity of the perovskite NdGaO3

AU - Krivchikov, A. I.

AU - Gorodilov, B. Ya

AU - Kolobov, I. G.

AU - Erenburg, A. I.

AU - Savitskiï, D. I.

AU - Ubizskiï, S. B.

AU - Syvorotka, I. M.

AU - Vasilechko, L. O.

PY - 2000/1/1

Y1 - 2000/1/1

N2 - X-ray (300 K) and ultrasonic (77-270 K) studies and measurements of the thermal conductivity (30-300 K) are carried out on single-crystal samples of NdGaO3 in different crystallographic directions. The values of the lattice parameters of NdGaO3 are refined. The sound velocities in the principal crystallographic directions are measured, and the elastic constants and Debye temperature are calculated. The observed anisotropy of the thermal conductivity is described in the framework of a gaskinetic model and is linked to the anisotropy of the interaction parameters of the acoustical and optical phonons.

AB - X-ray (300 K) and ultrasonic (77-270 K) studies and measurements of the thermal conductivity (30-300 K) are carried out on single-crystal samples of NdGaO3 in different crystallographic directions. The values of the lattice parameters of NdGaO3 are refined. The sound velocities in the principal crystallographic directions are measured, and the elastic constants and Debye temperature are calculated. The observed anisotropy of the thermal conductivity is described in the framework of a gaskinetic model and is linked to the anisotropy of the interaction parameters of the acoustical and optical phonons.

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EP - 374

JO - Low Temperature Physics

JF - Low Temperature Physics

IS - 5

ER -

Structure, sound velocity, and thermal conductivity of the perovskite NdGaO₃

Abstract

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