Regulation of the magnetic behavior by adjusting oxygen stoichiometry in ZrO_x film  

作　　者：朱焕锋 李晶 陈坤 易歆雨 程帅 袁亚飞 干福熹 

机构地区：[1]Shanghai Ultra-Precision Optical Manufacturing Engineering Center,Department of Optical Science and Engineering,Fudan University [2]Key Laboratory of Micro and Nano Photonic Structure(Ministry of Education),Fudan University

出　　处：《Chinese Optics Letters》2016年第11期110-114,共5页中国光学快报（英文版）

基　　金：supported by the National Nature Science Foundation of China(No.60578047);the National Basic Research Program of China(Nos.2009CB929201 and 2012CB934303);the National Science and Technology Major Project of the Ministry of Science and Technology of China(No.2011ZX02402);the Nature Science Foundation of Shanghai(No.13ZR1402600);the Shanghai Commission of Science and Technology(Nos.06DJ14007 and 11DZ2282200)

摘　　要：The mechanism of ferromagnetic ordering in ZrOx film is investigated by both experimental observation and theoretical calculation.Magnetic measurements reveal that the magnetic properties can be adjusted from diamagnetism to ferromagnetism by varying the oxygen stoichiometry.We find that oxygen-rich defects can be responsible for the observed magnetic properties by taking the measurements of x-ray photoelectron spectroscopy and room temperature photoluminescence spectra.Density functional theory calculations further confirm that the ferromagnetic order is mainly driven by the exchange interaction between the oxygen antisites and the neighboring anion atoms.The mechanism of ferromagnetic ordering in ZrOx film is investigated by both experimental observation and theoretical calculation.Magnetic measurements reveal that the magnetic properties can be adjusted from diamagnetism to ferromagnetism by varying the oxygen stoichiometry.We find that oxygen-rich defects can be responsible for the observed magnetic properties by taking the measurements of x-ray photoelectron spectroscopy and room temperature photoluminescence spectra.Density functional theory calculations further confirm that the ferromagnetic order is mainly driven by the exchange interaction between the oxygen antisites and the neighboring anion atoms.

关 键 词：Density functional theory DIAMAGNETISM Ferromagnetic materials FERROMAGNETISM Magnetic properties MAGNETISM Oxygen Photoelectron spectroscopy Photoluminescence STOICHIOMETRY Zirconium alloys 

分 类 号：O484.4[理学—固体物理]