Slight Co-doping tuned magnetic and electric properties on cubic BaFeO_(3) single crystal  

作　　者：Shijun Qin Bowen Zhou Zhehong Liu Xubin Ye Xueqiang Zhang Zhao Pan Youwen Long 覃湜俊;周博文;刘哲宏;叶旭斌;张雪强;潘昭;龙有文(Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China;School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100049,China;Songshan Lake Materials Laboratory,Dongguan 523808,China)

机构地区：[1]Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China [2]School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100049,China [3]Songshan Lake Materials Laboratory,Dongguan 523808,China

出　　处：《Chinese Physics B》2022年第9期141-145,共5页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.11934017 and 11921004);the National Key Research and Development Program of China(Grant Nos.2021YFA1400300,2018YFE0103200,and 2018YFA0305700);the Beijing Natural Science Foundation(Grant No.Z200007);the Fund from the Chinese Academy of Sciences(Grant No.XDB33000000).

摘　　要：The single crystal of cubic perovskite BaFeO3 shows multiple magnetic transitions and external stimulus sensitive magnetism.In this paper,a 5%-Co-doped BaFeO_(3)(i.e.BaFe_(0.95)Co_(0.05)O_(3))single crystal was grown by combining floating zone methods with high-pressure techniques.Such a slight Co doping has little effect on crystal structure,but significantly changes the magnetism from the parent antiferromagnetic ground state to a ferromagnetic one with the Curie temperature TC≈120 K.Compared with the parent BaFeO3 at the induced ferromagnetic state,the saturated magnetic moment of the doped BaFe_(0.95)Co_(0.05)O_(3) increases by about 10%and reaches 3.64μB/f.u.Resistivity and specific heat measurements show that the ferromagnetic ordering favors metallic-like electrical transport behavior for BaFe_(0.95)Co_(0.05)O_(3).The present work indicates that Co-doping is an effective method to tune the magnetic and electric properties for the cubic perovskite phase of BaFeO_(3).

关 键 词：floating-zone single crystal high-pressure synthesis chemical doping magnetic and electrical properties 

分 类 号：TB34[一般工业技术—材料科学与工程] O469[理学—凝聚态物理]