The properties of magnetic moment and specific heat of La 0.7Ca0.3MnO3 polycrystalline at different resistance state
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Wu, Z H
Chen, Lidong
Wang, Qun
Liu, Xinjun
Yu, Weidong
Li, Xiaomin
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American Institute of Physics
Abstract
The electric-pulse-induced resistance switching behavior was studied in bulk La0.7Ca0.3MnO3 polycrystalline at room temperature. The relationship between the thickness and the threshold value of electric pulse on La0.7Ca0.3MnO3 bulk was studied. It was found that the threshold value of electric pulse depends on the thickness of samples. The decrease of the magnetic moment and specific heat in the low resistance state on La0.7Ca0.3MnO3 are opposite to that observed on La0.9Ca0.1MnO3. These phenomena may be associated with the different ground states of La 0.9Ca0.1MnO3 and La0.7Ca 0.3MnO3. The change of magnetic configuration would change the specific heat arising from ferromagnetic spin-waves component and charge carriers.
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Journal of Physics: Conference Series
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2037-12-31
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