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| Low temperature ferromagnetic properties of CdS and CdTe thin films |
| Hafiz Tariq Masood1, Zahir Muhammad2, Muhammad Habib2, Dong-Ming Wang(王东明)1, De-Liang Wang(王德亮)1 |
1 Hefei National Laboratory for Physical Science at the Microscale, University of Science and Technology of China, Hefei 230026, China;
2 National Synchrotron Radiation Laboratory, Center for Excellence in Nanoscience, Chinese Academy of Sciences, University of Science and Technology of China, Hefei 230026, China |
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Abstract The magnetic property in a material is induced by the unpaired electrons. This can occur due to defect states which can enhance the magnetic moment and the spin polarization. In this report, CdS and CdTe thin films are grown on FTO glass substrates by chemical bath deposition and close-spaced sublimation, respectively. The magnetic properties, which are introduced from oxygen states, are found in CdS and CdTe thin films. From the hysteresis loop of magnetic moment it is revealed that CdS and CdTe thin films have different kinds of magnetic moments at different temperatures. The M-H curves indicate that from 100 K to 350 K, CdS and CdTe thin films show paramagnetism and diamagnetism, respectively. A superparamagnetic or a weakly ferromagnetic response is found at 5 K. It is also observed from ZFC/FC curves that magnetic moments decrease with temperature increasing. Spin polarized density functional calculation for spin magnetic moment is also carried out.
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Received: 16 January 2017
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| PACS: |
75.70.-i
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(Magnetic properties of thin films, surfaces, and interfaces)
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76.50.+g
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(Ferromagnetic, antiferromagnetic, and ferrimagnetic resonances; spin-wave resonance)
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75.20.-g
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(Diamagnetism, paramagnetism, and superparamagnetism)
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75.60.-d
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(Domain effects, magnetization curves, and hysteresis)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant No. 61474103) and the Chinese Scholarship Council (CSC) Fellowship for H. Tariq Masood and Z. Muhammad.These authors are contributed equally to this work. |
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Corresponding Authors: De-Liang Wang
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E-mail: eedewang@ustc.edu.cn
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2017, Vol. 26 
