Superconducting Studies on the Ho (Ba2-y Lay) Cu3 Oz (0 ≤ y ≤0.5) System

Author

Amish G. Joshi
S. K. Malik
William B. Yelon, Missouri University of Science and TechnologyFollow

Abstract

Structural and superconducting properties of the Ho(Ba_2-yLa_y)Cu₃O_z system, with 0.0≤y≤0.5, have been investigated through neutron diffraction, resistivity and magnetization studies. It is observed that on increasing La in Ho(Ba_2-yLa_y)Cu₃O_z, the oxygen occupancy at the O(1) site (at 0, 1/2, 0 in space group Pmmm) decreases and that at the O(5) (1/2, 0, 0) site increases, resulting in a decrease in orthorhombicity. As Ba²⁺ is replaced by La³⁺, the oxygen content per formula unit increases beyond 7. The variation in the superconducting transition temperature, Tc, from ∼90 K for y = 0 to ∼ 26 K for y = 0.5 is attributed to hole filling/localization by La. © 2002 Elsevier Science B.V. All rights reserved.

Recommended Citation

A. G. Joshi et al., "Superconducting Studies on the Ho (Ba2-y Lay) Cu3 Oz (0 ≤ y ≤0.5) System," Physica B: Condensed Matter, vol. 312 thru 313, pp. 68 - 70, Elsevier, Mar 2002.

The definitive version is available at https://doi.org/10.1016/S0921-4526(01)01162-0

Department(s)

Physics

Keywords and Phrases

Ho(Ba La )Cu O 2-y y 3 z; Superconducti vity; T depression c

International Standard Serial Number (ISSN)

0921-4526

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 Elsevier, All rights reserved.

Publication Date

01 Mar 2002