Low temperature ferromagnetic properties of CdS and CdTe thin films *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. (June 2017)

• Record Type: Journal Article
• Authors: Masood, Hafiz Tariq; Muhammad, Zahir; Habib, Muhammad; Wang 王, Dong-Ming 东明; Wang 王, De-Liang 德亮
• Is Part Of: Chinese physics B. Volume 26:Number 6(2017)
• Publication Date: 2017-06
• Subjects: CdS and CdTe thin films -- magnetic properties (VSM, ZFC/FC) -- DFT; 75.70.-I -- 76.50.+g -- 75.20.-g -- 75.60.-d; Physics -- Periodicals; Physics; Periodicals; 530.05
• DOI: 10.1088/1674-1056/26/6/067503
• Languages: English
• ISSNs: 1674-1056

Abstract

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.