Transport and magnetic study of the spin reorientation transition in the Tb-5(Si0.5Ge0.5)(4) magnetocaloric compound

• Type: Article in International Scientific Journal
• Date: 2005

Authors

araujo, jp (Author) FCUP; pereira, am (Author) FCUP; braga, me (Author) Other; pinto, rp (Author) Other; teixeira, jm (Author) FCUP; correia, fc (Author) Other; sousa, jb (Author) FCUP; morellon, l (Author) Other; algarabel, pa (Author) Other; magen, c (Author) Other; ibarra, mr (Author) Other

Journal

Title: Journal of Physics Condensed Matter

Vol. 17

Pages: 4941-4949

ISSN: 0953-8984

Publisher: Institute of Physics Publishing

Indexing

ISI Web of Knowledge - 14 Citations

Other information

Authenticus ID: P-000-1X7

DOI: 10.1088/0953-8984/17/32/008

Abstract (EN): Detailed measurements of the electrical resistivity p(T), thermopower S(T) and magnetization of Tb-5(Si0.5Ge0.5)(4) in the vicinity of the spin reorientation transitions observed in this compound are reported. Our results indicate a complex spin reorientation process associated with three different lattice sites occupied by the Tb ions. We identify two critical transition temperatures: one at T-SR1 = 57 K, as previously reported, and a new one at T-SR2 = 40 K. A simple model based on an approximate magnetic anisotropy energy is presented; it gives a satisfactory qualitative description of the main features of the reorientation processes.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9