Title :
Transport Properties of Half-metal-Polymer Composite
Author :
Mishra, S.R. ; Losby, J. ; Ghosh, K.
Author_Institution :
Univ. of Memphis, Memphis
Abstract :
We report the detail transport properties of compression molded CrO2-polymer composites. The transport measurements of the composites in the temperature range of 10-300 K were modeled using a two channel conductivity model based on spin dependent tunneling and multi-step hopping. The conductance behavior of the composite is dependent on the nature of insulating barrier which changes the nature of the grain boundaries at which spin polarized tunneling takes place.
Keywords :
chromium compounds; composite materials; compression moulding; electron spin polarisation; grain boundaries; polymers; tunnelling magnetoresistance; CrO2; channel conductivity; compression molding; grain boundaries; half-metal-polymer composite; insulating barrier; multistep hopping; spin dependent tunneling; transport measurements; transport properties; Compression molding; Conductivity; Grain boundaries; Magnetic tunneling; Physics; Plastic insulation; Polymers; Temperature dependence; Temperature distribution; Tunneling magnetoresistance;
Conference_Titel :
Magnetics Conference, 2006. INTERMAG 2006. IEEE International
Conference_Location :
San Diego, CA
Print_ISBN :
1-4244-1479-2
DOI :
10.1109/INTMAG.2006.376107
