New phase in the Bi-Sr-Ca-Cu-O system

被引：1

作者：

Kozeeva, LP ^{[1
]}

Kameneva, MY ^{[1
]}

Podberezskaya, NV ^{[1
]}

Vasiieva, IG ^{[1
]}

Kuratieva, NV ^{[1
]}

Naumov, DY ^{[1
]}

Nadolinnyi, VA ^{[1
]}

Fedorov, VE ^{[1
]}

机构：

[1] Russian Acad Sci, Siberian Branch, AV Nikolaev Inst Inorgan Chem, Novosibirsk, Russia

来源：

JOURNAL OF STRUCTURAL CHEMISTRY | 2004年 / 45卷 / 02期

关键词：

crystallization from a melt; Bi-Sr-Ca-Cu-O system; XRPA; DTA; EPR;

D O I：

10.1023/B:JORY.0000048875.49302.f4

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Cooling a melt of a Bi-Sr-Ca-Cu-O system (Bi:Sr:Ca:Cu=4:3:3:4 or 2:2:2:4) from 1000degreesC-1050degreesC yielded crystals of a new red-colored nonsuperconducting phase, accompanying the superconducting 2212 and 2201 phases. Based on the EPR spectra, it was concluded that copper is univalent in this compound. The new phase has a composition Bi2.2Sr1.6Ca1.3Cu2Ox. The X-ray diffraction pattern has been indexed, and the unit cell parameters of the phase have been determined: space group P2/m, a = 12.93, b = 4.55, c = 10.94 Angstrom; beta = 102.72degrees.

引用

页码：253 / 261

页数：9

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