Phase separation and microwave response of epitaxial and polycrystalline manganite films
|Steponas Asmontas 1,3, Adulfas Abrutis 2, Jonas Gradauskas 1,4, Andzej Lucun 1, Antanas Oginskis 1, Valentina Plausinaitiene 1,2, Algirdas Suziedelis 1,4, Bonifacas Vengalis 1,4|
1. Semiconductor Physics Institute, A.Gostauto 11, Vilnius LT-2600, Lithuania
Rare earth manganites, La1-xAxMnO3 (A=Sr, Ca,...), are of great interest due to a variety of physical phenomena such as charge and orbital ordering, electronic phase separation, spin-polarized electronic transport, intrinsic and extrinsic magnetoresistance (MR), e.t.c. The highest crystalline quality manganite films demonstrate colossal magnetoresistance meanwhile polycrystalline films were found to exhibit low-field MR due to spin-polarized tunnelling between misaligned grains.
Presentation: oral at E-MRS Fall Meeting 2003, Symposium D, by Steponas Asmontas
See On-line Journal of E-MRS Fall Meeting 2003
Submitted: 2003-05-23 18:09 Revised: 2009-06-08 12:55