Large Tunnel Magnetoresistance of Full-Heusler CoFeAlSi Alloy Granular Films

Autor:	Takuro Chino, Michiaki Kondo, Mutsuko Jimbo, Yuji Fujiwara
Rok vydání:	2011
Předmět:	Diffraction Tunnel magnetoresistance Materials science Spin polarization Condensed matter physics Physics and Astronomy (miscellaneous) Annealing (metallurgy) Alloy engineering General Engineering General Physics and Astronomy engineering.material Magnetic field
Zdroj:	Japanese Journal of Applied Physics. 50:123001
ISSN:	1347-4065 0021-4922
DOI:	10.7567/jjap.50.123001
Popis:	The tunnel magnetoresistance (TMR) and the structure of full-Heusler CoFeAlSi (CFAS)–Al2O3 granular films have been investigated. It was found that the most part of the film was in discontinuous layers after annealing at 673 K. A maximum MR ratio of about 18% was obtained at room temperature under a magnetic field of 8 kOe. The X-ray diffraction pattern of the film exhibited a weak peak of CFAS(220) and/or MgO(200) at about 45°, and a halo-like pattern with two peaks within the range 20–30°. These results suggest that the high MR ratio observed is related to the existence of granules with high spin polarization.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::21ae8551b941fb44c8035aff4179476e https://doi.org/10.7567/jjap.50.123001 Zobrazit plný text záznamu