Ultrasonic Properties of the MgB<suB>2</suB> Superconductor

Chin. Phys. Lett.

2001, Vol. 18

Issue (10): 1369-1370 DOI:

Original Articles

Ultrasonic Properties of the MgB₂ Superconductor

LI Shao-Chun;WANG Ru-Ju;LI Feng-Ying;LIU Zhen-Xing;ZHU Jia-Lin;YU Ri-Cheng;JIN Chang-Qing

Laboratory for Extreme Condition Physics, Institute of Physics, and Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080 Beijing Center for High Pressure Research, Chinese Academy of Sciences, Beijing 100080

Cite this article:

LI Shao-Chun, WANG Ru-Ju, LI Feng-Ying et al 2001 Chin. Phys. Lett. 18 1369-1370

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Abstract The sound velocities of longitudinal and shear waves are measured on polycrystalline MgB₂ superconductor with T_c of 39K. The specimen used in the experiments is pressed and heated using the MgB₂ powder. The elastic moduli, Debye temperature and specific heat at room temperature are obtained based on sound velocity data. The results indicate that the velocities are much higher than those in the usual materials, while elastic constants remain reasonably soft, which may be due to the high transition temperature of the MgB₂ superconductor.

Keywords: 43.35.Ae 62.20.Dc 74.25.Ld

Published: 01 October 2001

PACS:	43.35.Ae	(Ultrasonic velocity, dispersion, scattering, diffraction, and Attenuation in gases)
	62.20.Dc
	74.25.Ld	(Mechanical and acoustical properties, elasticity, and ultrasonic Attenuation)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2001/V18/I10/01369

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	LI Shao-Chun
	WANG Ru-Ju
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	ZHU Jia-Lin
	YU Ri-Cheng
	JIN Chang-Qing

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