Transactions of Nanjing University of Aeronautics & Astronautics
Structural and Magnetic Properties in Nd0.7Sr0.3MnO3 Manganite
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Abstract:
The temperature evolution of the crystal structure for Nd0.5Sr0.5MnO has been investigated by powder XRD between 125 K and 725 K. The structure can be described with a monoclinic symmetry (space group P21/m) in the temperature range of 125-175 K, while with the increase in temperature between 175 K and 575 K the structure involves a higher orthorhombic symmetry (space group Imma). The rhombohedral structure with space group R-3c is observed at high temperature region of 575-725 K. The increase in the magnetization at low temperatures can be ascribed to the field-induced short-range magnetic order of the Nd3+ ions. The dc and ac susceptibility data show some anomalies around the FM-PM transition region which can be attributed to the glass behavior and magnetic relaxation.
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This work was supported by the Jiangsu Provincial Natural Science Foundation (No. BK20141411). The authors thank Dr. Liu GY for the X-ray diffraction measurements and phase analysis.
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