Effects of Ho3+ Substitution on Ultrasonic Attenuation in Hoba2-xHoxCu3O7-δ Superconductors

Abstract:

Article Preview

Longitudinal and shear ultrasonic attenuation measurements were performed at 10 MHz in HoBa2-xHoxCu3O7-δ (x=0.0 and 0.15) polycrystalline ceramics between 80 K and 285 K. Longitudinal attenuation profiles showed a large peak around 200 K for superconducting HoBa2Cu3O7-δ but not for oxygen-reduced non-superconducting HoBa2Cu3O7-δ. Two longitudinal attenuation peaks at 190 K and 250 K were observed for Ba-substituted HoBa1.85Ho0.15Cu3O7-δ. The high temperature (∼190 K-200 K) peaks are due to absorption of sound energy during interaction of ultrasound wave with mobile oxygen atoms involved in an oxygen rearrangement process involving Cu-O chains of the materials.

Info:

Periodical:

Edited by:

A.K. Arof and S.A. Hashim Ali

Pages:

17-20

DOI:

10.4028/www.scientific.net/MSF.517.17

Citation:

A. K. Yahya et al., "Effects of Ho3+ Substitution on Ultrasonic Attenuation in Hoba2-xHoxCu3O7-δ Superconductors ", Materials Science Forum, Vol. 517, pp. 17-20, 2006

Online since:

June 2006

Export:

Price:

$35.00

[1] Q. Wang, G. A. Saunders, D. P. Almond, M. Cankurtaran and K. C. Goretta: Phys. Rev. B Vol. 52 (1995), pp.3711-3725.

[2] S. E. Brown, A. Migliori, and Z. Fisk: Solid State Comm. Vol. 65 (1988), pp.483-486.

[3] D. P. Almond, Q. Wang, , J. Freestone, , E. F. Lambson, , B. Chapman and G. A. Saunders: J. Phys.: Condens. Matter Vol. 1 (1989), pp.6853-6864.

[4] M. F. Xu, D. Bein, , R. F. Weigert, B. K. Sarma, M. Levy, , Z. Zhao, S. Adenwalla, A. Moreau, Q. Robinson, D. L. Johnson, S.J. Hwu, K. R. Poeppelmeier, and J. B. Ketterson: Phys. Rev B Vol. 39 (1989), pp.843-846.

DOI: 10.1103/physrevb.39.843

[5] A K Yahya, N A Hamid, R Abd-Shukor and H Imad: Ceramics International Vol. 30 (2004), pp.1797-1601.

[6] G. Ceder, M. Asta, and D. de Fontaine: Physica C Vol. 177 (1991), pp.106-114.

[7] L. G. Mamsurova, K. S. Pigalskiy, V. P. Sakun, A. I. Shushin, and L. G. Scherbakova: Physica C Vol. 167 (1990), pp.11-19.

[8] Y. N. Wang, Y. N. Huang and H. M. Shen: Supercond. Sci. and Technol.: Vol. 7 (1994), pp.441-453.

[9] A. K. Yahya and R. Abd-Shukor, Supercond. Sci. and Technol.: Vol. 11 (1998), pp.173-178.

In order to see related information, you need to Login.