ISSN:
1572-9605
Keywords:
Magnetic materials
;
oxides
;
phase transitions
;
colossal magnetoresistance
;
electron paramagnetic resonance
;
spin glass
Source:
Springer Online Journal Archives 1860-2000
Topics:
Electrical Engineering, Measurement and Control Technology
,
Physics
Notes:
Abstract The magnetic behavior of the distorted perovskite manganese, Pr0.65Ca0.35MnO3 was studied by X-band electron spin resonance for powder samples. We observed the onset of the charge-ordered state at T CO∼215 K, the antiferromagnetic transition with the peak of the ESR linewidth, ΔH p−p at T AF∼180 K and the canted antiferromagnetic transition at T CAF∼125 K associated with the abrupt increase of both the effective magnetization and ΔH p−p . Below 90 K, the absorption intensity profile becomes weakened with decreasing temperature suggesting the existence of some kind of magnetic disorder below 90 K, which is responsible for a part of evidence of the existence of the spin-glass state as has been proposed by Yoshizawa et al., Phys. Rev. B 52, 1689 (1996).
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1007736912517
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