Electron Spin Resonance in Pr0.65Ca0.35MnO3 |
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Authors: | Osami Yanagisawa Mitsuru Izumi Wei-Zhi Hu Kenji Nakanishi and Hideo Nojima |
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Affiliation: | (1) Laboratory of Applied Physics, Tokyo University of Mercantile Marine, 2-1-6, Etchu-jima, Koto-ku, Tokyo, 135-8533, Japan;(2) Functional Devices Research Laboratory, Sharp Corporation, 273-1 Kashiwa, Kashiwa-shi, Chiba, 277-0005, Japan |
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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, H
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 H
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). |
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Keywords: | Magnetic materials oxides phase transitions colossal magnetoresistance electron paramagnetic resonance spin glass |
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