Glass formation and crystallization in the Bi-Sr-Ca-Cu-O system

Abstract

The glass formation boundaries were determined in the Bi,O,SrO-CuO, Bi,O,-CaO-CuO and Bi,O,-SrO-CaO-CuOsystems and in more complex compositions with PbO by the melt-quenching method. Using DTA, the glass transition temperature T, , softening temperature T, ,crystallization temperature T, and the temperature range of melting were established. Some regions of composition in the Bi-Sr-Ca-Cu-0 system were found where crystalline phases of the type Bi,Sr,Ca,-,Cu,O,(n = 1,2,3) were identified. A scheme is suggested to obtain superconducting glass-ceramics by pressing and thermal treatment (at 820-640 "C) of amorphous powders.

Structural investigations of sodium diborate glasses containing PbO, Bi2O3 and TeO2: Elastic property measurements and spectroscopic studies

“…Bi 2 O 3 rich glasses are good c-ray absorbers and have been candidates for use in scintillation detectors in high energy physics [5][6][7][8]. Bi 2 O 3 containing glasses are also good precursors for the preparation of ceramic high T c superconductors [9][10][11]. Tellurite glasses have special applications such as in making IR domes, laser windows and other optical devices [12][13][14][15].…”