Evaluation of structure-related parameters of hot-pressed BISCCO (2223) phase

G. Celotti; Anna Tampieri; R. Masini; M. C. Malpezzi

doi:10.1016/0921-4534(94)90733-1

Evaluation of structure-related parameters of hot-pressed BISCCO (2223) phase

G. Celotti, Anna Tampieri, R. Masini, M. C. Malpezzi

Research output: Contribution to journal › Article

16 Scopus citations

Abstract

Bi_1.84Pb_0.34Sr_1.91Ca_2.03Cu_3.06O_x bulk superconductors were prepared by hot-pressing sintering in the range 790-830°C at 7 MPa in air for 2 h; keeping the temperature constant at 810°C, samples were also prepared varying the sintering time in the range 1-6 h. The density increases with increasing sintering temperature and time, as does the orientation factor (F) which is further strongly affected by time. The evaluation of the cell parameters shows an increase of both "c" and "a" on increasing the temperature up to 800°C; a continuous decrease is detected at higher temperatures. On the other hand a constant dilatation in the cell volume is detected as a function of the sintering time. The crystallite volume continuously increases with sintering temperature and time.

Original language	English (US)
Pages (from-to)	346-352
Number of pages	7
Journal	Physica C: Superconductivity and its Applications
Volume	225
Issue number	3-4
DOIs	https://doi.org/10.1016/0921-4534(94)90733-1
State	Published - May 20 1994

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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title = "Evaluation of structure-related parameters of hot-pressed BISCCO (2223) phase",

abstract = "Bi1.84Pb0.34Sr1.91Ca2.03Cu3.06Ox bulk superconductors were prepared by hot-pressing sintering in the range 790-830°C at 7 MPa in air for 2 h; keeping the temperature constant at 810°C, samples were also prepared varying the sintering time in the range 1-6 h. The density increases with increasing sintering temperature and time, as does the orientation factor (F) which is further strongly affected by time. The evaluation of the cell parameters shows an increase of both {"}c{"} and {"}a{"} on increasing the temperature up to 800°C; a continuous decrease is detected at higher temperatures. On the other hand a constant dilatation in the cell volume is detected as a function of the sintering time. The crystallite volume continuously increases with sintering temperature and time.",

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AU - Tampieri, Anna

AU - Masini, R.

AU - Malpezzi, M. C.

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N2 - Bi1.84Pb0.34Sr1.91Ca2.03Cu3.06Ox bulk superconductors were prepared by hot-pressing sintering in the range 790-830°C at 7 MPa in air for 2 h; keeping the temperature constant at 810°C, samples were also prepared varying the sintering time in the range 1-6 h. The density increases with increasing sintering temperature and time, as does the orientation factor (F) which is further strongly affected by time. The evaluation of the cell parameters shows an increase of both "c" and "a" on increasing the temperature up to 800°C; a continuous decrease is detected at higher temperatures. On the other hand a constant dilatation in the cell volume is detected as a function of the sintering time. The crystallite volume continuously increases with sintering temperature and time.

AB - Bi1.84Pb0.34Sr1.91Ca2.03Cu3.06Ox bulk superconductors were prepared by hot-pressing sintering in the range 790-830°C at 7 MPa in air for 2 h; keeping the temperature constant at 810°C, samples were also prepared varying the sintering time in the range 1-6 h. The density increases with increasing sintering temperature and time, as does the orientation factor (F) which is further strongly affected by time. The evaluation of the cell parameters shows an increase of both "c" and "a" on increasing the temperature up to 800°C; a continuous decrease is detected at higher temperatures. On the other hand a constant dilatation in the cell volume is detected as a function of the sintering time. The crystallite volume continuously increases with sintering temperature and time.

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