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Investigations on structural, magnetic and electronic structure of Gd-doped ZnO nanostructures synthesized using sol–gel technique

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Abstract

GdxZn1−x O (x = 0, 0.02, 0.04 and 0.06) nanostructures have been synthesized using sol–gel technique and characterized to understand their structural and magnetic properties. X-ray diffraction (XRD) results show that Gd (0, 2, 4 and 6 %)-doped ZnO nanostructures crystallized in the wurtzite structure having space group C3v (P63mc). Photoluminescence and Raman studies of Gd-doped ZnO powder show the formation of singly ionized oxygen vacancies. X-ray absorption spectroscopy reveals that Gd replaces the Zn atoms in the host lattice and maintains the crystal symmetry with slight lattice distortion. Gd L3-edge spectra reveal charge transfer between Zn and Gd dopant ions. O K-edge spectra also depict the charge transfer through the oxygen bridge (Gd–O–Zn). Weak magnetic ordering is observed in all Gd-doped ZnO samples.

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Authors and Affiliations

  1. Department of Physics, Punjabi University, Patiala, Punjab, 147002, India

    Palvinder Kaur & S. M. Rao

  2. Applied Science Department, PEC University of Technology, Chandigarh, 160012, India

    Sanjeev Kumar

  3. Institute of Physics, Academia Sinica, Taipei, 11529, Taiwan

    Chi Liang Chen & S. M. Rao

  4. National Synchrotron Radiation Research Center (NSRRC), Hsinchu, 30076, Taiwan

    Ying-Ya Hsu, Ting-Shan Chan & Chung-Li Dong

  5. Materials Engineering Department, Indian Institute of Science, Bangalore, 560012, India

    C. Srivastava

  6. Department of Physics, Guru Nanak Dev University, Amritsar, 143005, India

    Anupinder Singh

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  1. Palvinder Kaur
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Kaur, P., Kumar, S., Chen, C.L. et al. Investigations on structural, magnetic and electronic structure of Gd-doped ZnO nanostructures synthesized using sol–gel technique. Appl. Phys. A 122, 161 (2016). https://doi.org/10.1007/s00339-016-9707-5

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