Anomalous magnetoresistance of nonequilibrium Eu-TM (Co, Mo) alloy thin films

Autor:	Kenji Sumiyama, Kenji Suzuki, K Shoji, Toyohiko J. Konno, Kimio Wakoh
Rok vydání:	1998
Předmět:	Materials science Magnetoresistance Magnetic moment Condensed matter physics Alloy Non-equilibrium thermodynamics engineering.material Condensed Matter Physics Condensed Matter::Materials Science Magnetization Impurity engineering General Materials Science Anomaly (physics) Thin film
Zdroj:	Journal of Physics: Condensed Matter. 10:5619-5626
ISSN:	1361-648X 0953-8984
DOI:	10.1088/0953-8984/10/25/012
Popis:	We studied the magnetization and magnetoresistance ratio (MR) of nonequilibrium Eu-rich Eu-TM (TM = Co, Mo) alloy thin films prepared by vapour-phase synthesis. We observed that the magnetization curves of the Eu-TM films show an irreversible kink at about 8 T. The longitudinal and transverse MR curves of these films also exhibit irreversible positive-to-negative change at about 8 and 4 T, respectively, while reversible components show only a monotonic decrease. These behaviours are in contrast with the monotonically increasing MR of pure Eu, measured up to 14 T, but are essentially identical to those observed for nonequilibrium Eu-Fe thin films, implying that the anomaly results from structural disorder rather than from the magnetic moments of impurities.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e3f6526e9e51ba387ce115249fa245cd https://doi.org/10.1088/0953-8984/10/25/012 Zobrazit plný text záznamu