Ortho-II structure in <script type="math/tex">ABa_{2}Cu_{3}O_{7-\delta}</script> compounds (A=Er, Nd, Pr, Sm, Yb)

Krekels, T.; Zou, H.; Van Tendeloo, G.; Wagener, D.; Buchgeister, M.; Hosseini, S.M.; Herzog, P.

doi:10.1016/0921-4534(92)90458-O

Title

Ortho-II structure in $ABa_{2}Cu_{3}O_{7-\delta}$ compounds (A=Er, Nd, Pr, Sm, Yb)

Author

Krekels, T.

Zou, H.

Van Tendeloo, G.

Wagener, D.

Buchgeister, M.

Hosseini, S.M.

Herzog, P.

Abstract

Oxygen ordering has been investigated in superconducting ABa2Cu3O7-delta ceramic materials with A = Er, Nd, Sm and Yb, as well as in samples of this type with the rate earth A partially substituted by Pr. The critical temperature T(c) was determined as a function of the oxygen deficiency-delta of the compound and the corresponding microstructures were investigated by electron diffraction and electron microscopy. A distinct relationship exists between the width of the 60 K plateau and the ortho II ordering. Our results show that the ortho II ordered phase is the superconducting phase with a characteristic T(c) of 60 K.

Language

English

Source (journal)

Physica: C : superconductivity. - Amsterdam, 1988, currens

Publication

Amsterdam : North-Holland , 1992

ISSN

0921-4534 [print]

1873-2143 [online]

DOI

10.1016/0921-4534(92)90458-O

Volume/pages