Microstructure, Magnetic Properties, and Spin Polarization of Quaternary Heusler Alloys

Author

Karthik, S.V. ; Rajanikanth, A. ; Takahashi, Y. ; Hono, K.

Author_Institution

Univ. of Tsukuba, Tsukuba

fYear

2006

fDate

8-12 May 2006

Firstpage

378

Lastpage

378

Abstract

This article presents experiments on the magnetic characterisation of quaternary Heusler alloys for spintronic applications. In this work, polycrystalline Co₂Cr_1-XFe_XAl (CCFA), Co₂Cr_1-XV_XAl (CCVA) and Co₂V_1-XFe_XAl (CVFA) bulk alloys were prepared by arc melting for mictrostructural, magnetic, and spin polarised properties. Magnetic measurements were carried out using VSM and SQUID magnetometry. Material microstructure was investigated through XRD and TEM analysis. And finally, spin polarisation measurements were carried out using point contact Andreev reflection technique (PCAR).

Keywords

X-ray diffraction; aluminium alloys; chromium alloys; cobalt alloys; ferromagnetic materials; iron alloys; magnetoelectronics; point contact spectroscopy; spin polarised transport; transmission electron microscopy; tunnelling magnetoresistance; vanadium alloys; Co₂CrFeAl; Co₂CrVAl; Co₂VFeAl; Heusler alloy magnetic properties; Heusler alloy microstructure; Heusler alloy spin polarization; SQUID magnetometry; TEM; VSM; XRD; arc melting; magnetic characterisation; point contact Andreev reflection technique; polycrystalline CCFA bulk alloy; polycrystalline CCVA bulk alloy; polycrystalline CVFA bulk alloy; quaternary Heusler alloys; spintronic applications; vibrating sample magnetometry; Aluminum alloys; Chromium alloys; Cobalt alloys; Iron alloys; Magnetic properties; Magnetic variables measurement; Magnetoelectronics; Microstructure; Polarization; SQUIDs;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetics Conference, 2006. INTERMAG 2006. IEEE International

Conference_Location

San Diego, CA

Print_ISBN

1-4244-1479-2

Type

conf

DOI

10.1109/INTMAG.2006.376102

Filename

4261811