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

作     者：Deepika Raju Kumar Ritesh Kumar Kamdeo Prasad Yadav Pratyush Vaibhav Seema Sharma Rakesh Kumar Singh Santosh Kumar Deepika;Raju Kumar;Ritesh Kumar;Kamdeo Prasad Yadav;Pratyush Vaibhav;Seema Sharma;Rakesh Kumar Singh;Santosh Kumar

作者机构：College o f CommerceArts and SciencePatna.BiharIndia Jaypee University o f Engineering and TechnologyGunaMadhya PradeshIndia Anugrah Narayan CollegePatnaBiharIndia Aryabhatta Knowledge UniversityPatnaBiharIndia 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2020年第29卷第10期

页      面：566-572页

核心收录：

学科分类：080903[工学-微电子学与固体电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：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 

主　　题：dilute magnetic semiconductors(DMS) bound magnetic polaron photoluminescence ferromagnetism 

摘      要：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.