X-ray diffraction study of MgB2 at low temperatures

Y. Xue; S. Asada; A. Hosomichi; S. Naher; J. Xue; H. Kaneko; H. Suzuki; T. Muranaka; J. Akimitsu

doi:10.1007/s10909-004-2903-2

X-ray diffraction study of MgB₂ at low temperatures

Y. Xue, S. Asada, A. Hosomichi, S. Naher, J. Xue, H. Kaneko, H. Suzuki, T. Muranaka, J. Akimitsu

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

8 Citations (Scopus)

Abstract

We have performed powder X-ray diffraction of MgB₂ superconductor between 10 and 300 K. Temperature dependence of integrated intensities of both (002) and (110) X-ray reflections shows a peak at around T_C, superconducting transition temperature. The integrated intensity of the X-ray reflection is related to the phonon frequency through a Debye-Waller factor. Lattice parameters a and c show negative thermal expansions at low temperatures. The negative thermal expansion might be due to an electronic origin and not directly related to the superconducting transition.

Original language	English
Pages (from-to)	1105-1115
Number of pages	11
Journal	Journal of Low Temperature Physics
Volume	138
Issue number	5-6
DOIs	https://doi.org/10.1007/s10909-004-2903-2
Publication status	Published - Mar 1 2005
Externally published	Yes

Keywords

Electron-photon interaction
Fermi liquid
MgB
Negative thermal expansion
Superconductivity
X-ray diffraction

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Materials Science(all)
Condensed Matter Physics

Access to Document

10.1007/s10909-004-2903-2

Cite this

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title = "X-ray diffraction study of MgB2 at low temperatures",

abstract = "We have performed powder X-ray diffraction of MgB2 superconductor between 10 and 300 K. Temperature dependence of integrated intensities of both (002) and (110) X-ray reflections shows a peak at around TC, superconducting transition temperature. The integrated intensity of the X-ray reflection is related to the phonon frequency through a Debye-Waller factor. Lattice parameters a and c show negative thermal expansions at low temperatures. The negative thermal expansion might be due to an electronic origin and not directly related to the superconducting transition.",

keywords = "Electron-photon interaction, Fermi liquid, MgB, Negative thermal expansion, Superconductivity, X-ray diffraction",

author = "Y. Xue and S. Asada and A. Hosomichi and S. Naher and J. Xue and H. Kaneko and H. Suzuki and T. Muranaka and J. Akimitsu",

year = "2005",

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doi = "10.1007/s10909-004-2903-2",

language = "English",

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TY - JOUR

T1 - X-ray diffraction study of MgB2 at low temperatures

AU - Xue, Y.

AU - Asada, S.

AU - Hosomichi, A.

AU - Naher, S.

AU - Xue, J.

AU - Kaneko, H.

AU - Suzuki, H.

AU - Muranaka, T.

AU - Akimitsu, J.

PY - 2005/3/1

Y1 - 2005/3/1

N2 - We have performed powder X-ray diffraction of MgB2 superconductor between 10 and 300 K. Temperature dependence of integrated intensities of both (002) and (110) X-ray reflections shows a peak at around TC, superconducting transition temperature. The integrated intensity of the X-ray reflection is related to the phonon frequency through a Debye-Waller factor. Lattice parameters a and c show negative thermal expansions at low temperatures. The negative thermal expansion might be due to an electronic origin and not directly related to the superconducting transition.

AB - We have performed powder X-ray diffraction of MgB2 superconductor between 10 and 300 K. Temperature dependence of integrated intensities of both (002) and (110) X-ray reflections shows a peak at around TC, superconducting transition temperature. The integrated intensity of the X-ray reflection is related to the phonon frequency through a Debye-Waller factor. Lattice parameters a and c show negative thermal expansions at low temperatures. The negative thermal expansion might be due to an electronic origin and not directly related to the superconducting transition.

KW - Electron-photon interaction

KW - Fermi liquid

KW - MgB

KW - Negative thermal expansion

KW - Superconductivity

KW - X-ray diffraction

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U2 - 10.1007/s10909-004-2903-2

DO - 10.1007/s10909-004-2903-2

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JO - Journal of Low Temperature Physics

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