MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
Crystal Structures and Spin Injection Signals of Si/Mg/MgO/Co2FeAl0.5Si0.5 Junctions
Takashi OnoderaMasahiro YoshidaNobuki TezukaMasashi MatsuuraSatoshi SugimotoYoshiaki Saito
Author information
JOURNALS FREE ACCESS

2013 Volume 54 Issue 8 Pages 1392-1395

Details
Abstract

We investigated the crystal structures and the spin injection signals of Si/Mg/MgO/Co2FeAl0.5Si0.5 (CFAS) junctions deposited by molecule beam epitaxy. The (001)-orientation and the structural ordering of CFAS thin films changed by heating deposition of CFAS and the insertion of Mg layer into Si/MgO interface. Spin injection signals observed at 10 K for the junctions by 3 terminals Hanle measurements. The maximum voltage change, ΔVMAX, was increased by heating deposition of CFAS and the insertion of Mg layer. It is supposed that the enhancement of spin polarization by the improvement of structural ordering of CFAS or coherent tunneling by (001)-oriented MgO barrier caused the increment of ΔVMAX.

Information related to the author
© 2013 The Japan Institute of Metals and Materials
Previous article Next article
feedback
Top