中国物理B ›› 2020, Vol. 29 ›› Issue (10): 108503-.doi: 10.1088/1674-1056/ab9c0c

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Deepika1, Raju Kumar1, Ritesh Kumar1, Kamdeo Prasad Yadav1, Pratyush Vaibhav2, Seema Sharma3, Rakesh Kumar Singh4, Santosh Kumar1,†()   

  • 收稿日期:2020-04-16 修回日期:2020-05-16 接受日期:2020-06-12 出版日期:2020-10-05 发布日期:2020-10-05
  • 通讯作者: Santosh Kumar

Defect induced room-temperature ferromagnetism and enhanced photocatalytic activity in Ni-doped ZnO synthesized by electrodeposition

Deepika1, Raju Kumar1, Ritesh Kumar1, Kamdeo Prasad Yadav1, Pratyush Vaibhav2, Seema Sharma3, Rakesh Kumar Singh4, and Santosh Kumar1,†   

  1. 1 College of Commerce, Arts and Science, Patna, Bihar, India
    2 Jaypee University of Engineering and Technology, Guna, Madhya Pradesh, India
    3 Anugrah Narayan College, Patna, Bihar, India
    4 Aryabhatta Knowledge University, Patna, Bihar, India
  • Received:2020-04-16 Revised:2020-05-16 Accepted:2020-06-12 Online:2020-10-05 Published:2020-10-05
  • Contact: Corresponding author. E-mail: skphysics@yahoo.co.in
  • About author:
    †Corresponding author. E-mail: skphysics@yahoo.co.in
    * Project supported by the UGC-DAE, Consortium for Scientific Research, Indore through its CRS project bearing No. CSR-IC/MSRSR-12/CRS-220/2017-18/1301.

Abstract:

Zn0.90Ni0.10O nanoparticles have been synthesized by single-bath two-electrode electrodeposition at constant voltage. X-ray diffraction, UV vis and photoluminescence studies reveal that a single-phase polycrystalline hcp wurtzite crystal structure of ZnO is evolved. The material consists of a large number of defects such as oxygen vacancy (Ov) and zinc interstitial (Zi). The magnetization study reveals that the sample exhibits room-temperature global ferromagnetism and the ferromagnetic ordering seems to be defect induced via bound magnetic polaron mechanism, and double exchange is also expected to have played role. Interesting optoelectronic properties have been found in the synthesized sample and the material seems to be a potential candidate to be used as a UV sensor. Such a transition metal doped ZnO based dilute magnetic semiconducting system exhibiting room-temperature ferromagnetism is likely to be first of its kind in the sense that such materials have not yet been reported to be synthesized by the simple method of electrodeposition to the best of our knowledge on the basis of ample literature review.

Key words: dilute magnetic semiconductors (DMS), bound magnetic polaron, photoluminescence, ferromagnetism

中图分类号:  (Magnetoelectronics; spintronics: devices exploiting spin polarized transport or integrated magnetic fields)

  • 85.75.-d
75.25.-j (Spin arrangements in magnetically ordered materials (including neutron And spin-polarized electron studies, synchrotron-source x-ray scattering, etc.)) 75.30.Cr (Saturation moments and magnetic susceptibilities) 75.30.Et (Exchange and superexchange interactions)