ANOMALOUS BEHAVIOR OF THE ELECTRICAL-RESISTIVITY OF Y2FE14B

• Type: Another Publication in an International Scientific Journal
• Date: 1991

Authors

sousa, j. b. (Author) FCUP; AMADO, MM (Author) Other; PINTO, RP (Author) Other; M. A. Salgueiro da Silva (Author) FCUP; BRAGA, ME (Author) Other; BUSCHOW, KHJ (Author) Other

Journal

Title: Journal of Physics Condensed Matter

Vol. 3

Pages: 4119-4123

ISSN: 0953-8984

Publisher: Institute of Physics Publishing

Indexing

ISI Web of Knowledge - 8 Citations

Scopus - 10 Citations

Other information

Authenticus ID: P-001-QNP

DOI: 10.1088/0953-8984/3/22/023

Abstract (EN): Accurate measurements of the electrical resistivity (rho) and its temperature derivative (d-rho/dT) in the ferromagnet Y2Fe14B have been made from 4-750 K, and the results have been compared with those previously obtained for Nd2Fe14B. In both cases rho-(T) increases rapidly at low temperatures, approaching quasi-saturation well below the Curie point (T(c)). The weak resistivity singularity near T(c) is anomalous, giving negative d-rho/dT values. Small humps also occur in rho-(T) just below T(c). The critical analysis of these results indicates that the low-temperature anomaly is likely to be associated with spin-fluctuation effects, whereas the hump effects below T(c) are related to the giant Invar effect in these compounds.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 5