Title :
EPR and resistivity study of Pr0.7Ba0.3MnO3 manganite
Author :
Ulyanov, Alexander N. ; Quang, Hoang Duc ; Pismenova, Nataliya E. ; Yu, Seong-Cho
Author_Institution :
Dept. of Phys., Chung-Buk Nat. Univ., Cheongju, South Korea
Abstract :
The properties of Pr0.7Ba0.3MnO3 composition have been studied by means of magnetic and resistance measurements. According to X-ray CuK α diffraction analysis, the sample was single-orthorhombic phase. The temperature dependence of resistance in the paramagnetic region followed the nearest neighbor hopping of the small polaron model. The value of activation energy obtained with the resistivity measurement was higher than that deduced from the temperature dependence of electron paramagnetic resonance line intensity.
Keywords :
barium compounds; magnetic polarons; magnetoresistance; paramagnetic materials; paramagnetic resonance; praseodymium compounds; Pr0.7Ba0.3MnO3; electron paramagnetic resonance; magnetic polarons; magnetoresistance; nearest neighbor hopping; paramagnetic materials; polaron model; single-orthorhombic phase; Conductivity measurement; Electrical resistance measurement; Electrons; Magnetic analysis; Magnetic properties; Nearest neighbor searches; Paramagnetic materials; Paramagnetic resonance; Temperature dependence; X-ray diffraction; Magnetic resonance; magnetoresistance (MR); resistance;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2005.854828
