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

被引：40
作者：
Kaur, Palvinder [1 ]
Kumar, Sanjeev [2 ]
Chen, Chi Liang [3 ]
Hsu, Ying-Ya [4 ]
Chan, Ting-Shan [4 ]
Dong, Chung-Li [4 ]
Srivastava, C. [5 ]
Singh, Anupinder [6 ]
Rao, S. M. [1 ,3 ]
机构：
[1] Punjabi Univ, Dept Phys, Patiala 147002, Punjab, India
[2] PEC Univ Technol, Dept Appl Sci, Chandigarh 160012, India
[3] Acad Sinica, Inst Phys, Taipei 11529, Taiwan
[4] NSRRC, Hsinchu 30076, Taiwan
[5] Indian Inst Sci, Dept Mat Engn, Bangalore 560012, Karnataka, India
[6] Guru Nanak Dev Univ, Dept Phys, Amritsar 143005, Punjab, India
来源：
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2016年 / 122卷 / 03期
关键词：
PHOTOLUMINESCENCE PROPERTIES; FERROMAGNETISM; FE; GD2O3;
D O I：
10.1007/s00339-016-9707-5
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
GdxZn1-xO (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 C3(v) (P6(3)mc). 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 L-3-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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页数：8
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