Abstract
Longitudinal and transverse magnetoresistance of polycrystalline Sm0.55Sr0.45MnO3 are measured in order to study anisotropic magneto-transport (AMR) properties as a function of grain boundary density. It is found that the magnitude of the AMR strongly depends on the grain size and the magnetic moment of the samples. The results are explained through a spin polarized transport model in which the difference between the magnetization within the grain and at its surface determines the tunneling probability of the spin polarized carriers and the anisotropic magnetoresistance. Our results show that the relationship between the AMR and magnetic moment in manganites is rather simple and is as expected as in the 3d alloys.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
