A photo-thermally stimulated exoemission technique used to study the properties of HTSC ceramics based on YBa2Cu3O7-delta / Syurdo AI,Kortov VS,Mil'man II,Slesarev AI,Mikhailovich AP // RUSSIAN JOURNAL OF NONDESTRUCTIVE TESTING. - 2004. - V. 40, l. 12. - P. 830-833.

ISSN/EISSN:

1061-8309 / нет данных

Type:

Article

Abstract:

The method of photo-thermally stimulated exoelectron emission (PTSE) is used to study the processes in the surface layers of HTSC ceramics based on YBa2Cu3O7-delta. A correlation is observed between variations of the exoemission current and the transition to the superconducting state. The experimentally detected hysteresis in the PTSE intensity of YBa2Cu3O7-delta ceramics, when thermally cycled in the range T = 80-160 K, is limited by two processes. Below T = 90 K, the chemisorption has a significant effect on the physical phenomena under study, thus impeding the search for new PTSE regularities in HTSC ceramics. At the same time, exoemission properties of the ceramics considerably change in the range 80-160 K. It is also shown that the superconducting transition and the thermal absorption phenomena for an YBa2Cu3O6.8 specimen are split in the studied temperature range, which allows the PTSE technique to detect the superconducting state and to observe the transition dynamics.

Author keywords:

нет данных

DOI:

10.1007/s11181-005-0114-9

Web of Science ID:

ISI:000228154200007

Соавторы в МНС:

Другие поля

Поле	Значение
Month	DEC
Publisher	MAIK NAUKA/INTERPERIODICA
Address	C/O KLUWER ACADEMIC-PLENUM PUBLISHERS, 233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
Research-Areas	Materials Science
Web-of-Science-Categories	Materials Science, Characterization \& Testing
Number-of-Cited-References	8
Journal-ISO	Russ. J. Nondestr. Test.
Doc-Delivery-Number	913LW