Raman study on the effects of sintering temperature on the Jc(H) performance of MgB2 superconductor

W. X. Li; R. H. Chen; Y. Li; M. Y. Zhu; H. M. Jin; R. Zeng; S. X. Dou; B. Lu

doi:10.1063/1.2829808

Raman study on the effects of sintering temperature on the Jc(H) performance of MgB2 superconductor

W. X. Li, R. H. Chen, Y. Li, M. Y. Zhu, H. M. Jin, R. Zeng, S. X. Dou, B. Lu

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

Abstract

The influence of sintering temperature on the critical transition temperature Tc and critical current density Jc for the Mg B2 superconductor was investigated systematically with the observation of Raman scattering measurement and flux pinning force Fp analysis. The enhanced E2g mode in Raman spectra with increasing in situ sintering temperature shows gradual strengthening of the electron-phonon coupling in Mg B2, which means that the crystals become more harmonic after higher temperature sintering. However, the crystal harmonicity is degraded for samples sintered at even higher temperature due to Mg deficiency. A possible explanation for the Jc (H) performance, which is in accordance with the Raman spectroscopy observation and Fp analysis, is the cooperation between the electron-phonon coupling in the E2g mode and the flux pinning centers, mainly originating from the lattice distortion due to the different sintering temperatures.

Original language	English
Article number	13511
Pages (from-to)	1-5
Number of pages	5
Journal	Journal of Applied Physics
Volume	103
Issue number	1
DOIs	https://doi.org/10.1063/1.2829808
Publication status	Published - 2008

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title = "Raman study on the effects of sintering temperature on the Jc(H) performance of MgB2 superconductor",

abstract = "The influence of sintering temperature on the critical transition temperature Tc and critical current density Jc for the Mg B2 superconductor was investigated systematically with the observation of Raman scattering measurement and flux pinning force Fp analysis. The enhanced E2g mode in Raman spectra with increasing in situ sintering temperature shows gradual strengthening of the electron-phonon coupling in Mg B2, which means that the crystals become more harmonic after higher temperature sintering. However, the crystal harmonicity is degraded for samples sintered at even higher temperature due to Mg deficiency. A possible explanation for the Jc (H) performance, which is in accordance with the Raman spectroscopy observation and Fp analysis, is the cooperation between the electron-phonon coupling in the E2g mode and the flux pinning centers, mainly originating from the lattice distortion due to the different sintering temperatures.",

author = "Li, {W. X.} and Chen, {R. H.} and Y. Li and Zhu, {M. Y.} and Jin, {H. M.} and R. Zeng and Dou, {S. X.} and B. Lu",

year = "2008",

doi = "10.1063/1.2829808",

language = "English",

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T1 - Raman study on the effects of sintering temperature on the Jc(H) performance of MgB2 superconductor

AU - Li, W. X.

AU - Chen, R. H.

AU - Li, Y.

AU - Zhu, M. Y.

AU - Jin, H. M.

AU - Zeng, R.

AU - Dou, S. X.

AU - Lu, B.

PY - 2008

Y1 - 2008

N2 - The influence of sintering temperature on the critical transition temperature Tc and critical current density Jc for the Mg B2 superconductor was investigated systematically with the observation of Raman scattering measurement and flux pinning force Fp analysis. The enhanced E2g mode in Raman spectra with increasing in situ sintering temperature shows gradual strengthening of the electron-phonon coupling in Mg B2, which means that the crystals become more harmonic after higher temperature sintering. However, the crystal harmonicity is degraded for samples sintered at even higher temperature due to Mg deficiency. A possible explanation for the Jc (H) performance, which is in accordance with the Raman spectroscopy observation and Fp analysis, is the cooperation between the electron-phonon coupling in the E2g mode and the flux pinning centers, mainly originating from the lattice distortion due to the different sintering temperatures.

AB - The influence of sintering temperature on the critical transition temperature Tc and critical current density Jc for the Mg B2 superconductor was investigated systematically with the observation of Raman scattering measurement and flux pinning force Fp analysis. The enhanced E2g mode in Raman spectra with increasing in situ sintering temperature shows gradual strengthening of the electron-phonon coupling in Mg B2, which means that the crystals become more harmonic after higher temperature sintering. However, the crystal harmonicity is degraded for samples sintered at even higher temperature due to Mg deficiency. A possible explanation for the Jc (H) performance, which is in accordance with the Raman spectroscopy observation and Fp analysis, is the cooperation between the electron-phonon coupling in the E2g mode and the flux pinning centers, mainly originating from the lattice distortion due to the different sintering temperatures.

UR - http://handle.uws.edu.au:8081/1959.7/529190

U2 - 10.1063/1.2829808

DO - 10.1063/1.2829808

M3 - Article

SN - 0021-8979

VL - 103

SP - 1

EP - 5

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 1

M1 - 13511

ER -

Raman study on the effects of sintering temperature on the Jc(H) performance of MgB2 superconductor

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