On the nature of the room temperature ferromagnetism in nanoparticulate co-doped ZnO thin films prepared by EB-PVD

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• 作者：Niko Churata Mamani^a ; Rafael Tomaz da Silva^a ; Angela Ortiz de Zevallos^a ; Alexandre Alberto Chaves Cotta^b ; ^c ; Waldemar Augusto de Almeida Macedo^b ; Má ; ximo Siu Li^d ; Maria Inê ; s Basso Bernardi^d ; Antonio Carlos Doriguetto^a ; Hugo Bonette de Carvalho^a ; ^{bonette@gmail.com} ; ^{bonette@unifal-mg.edu.br}
• 关键词：Dilute magnetic oxides ; Defect ferromagnetism ; Co-doped ZnO thin films ; Structural and magnetic characterization
• 刊名：Journal of Alloys and Compounds
• 出版年：2017
• 出版时间：25 February 2017
• 年：2017
• 卷：695
• 期：Complete
• 页码：2682-2688
• 全文大小：1568 K
• 卷排序：695

文摘

Co-doped ZnO (Zn1−xCoxO, x = 0.02 and 0.08) films were prepared by EB-PVD method. Structural analyses detects a lower density of VO for sample with x = 0.08. Optical results show the existence of a defect sub-band close to conduction band. Magnetic data reveal a huge MS for the film with x = 0.08, not correlated to VO. Magnetic properties are analyzed in the scope of BMP theory related to Zni defects.