Mg掺杂对二维自旋系统Cu_(3)B_(2)O_(6)磁化率的研究  

Mg-substitution effect on the magnetic susceptibility of the two-dimensional spin system Cu_(3)B_(2)O_(6)

作　　者：何顺 HE Shun(l.School of Physical Science and Technology,SUST,Suzhou 215009,China;Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application,Suzhou 215009,China)

机构地区：[1]苏州科技大学物理科学与技术学院,江苏苏州215009 [2]江苏省微纳热流技术与能源应用重点实验室,江苏苏州215009

出　　处：《苏州科技大学学报（自然科学版）》2022年第3期32-36,共5页Journal of Suzhou University of Science and Technology（Natural Science Edition）

基　　金：国家自然科学基金资助项目(11503017);supported by Jiangsu Key Disciplines of the Fourteenth Five-Year Plan(Grant No.2021135)。

摘　　要：人工合成了((Cu_(1-x)Mg_(x))_(3)B_(2)O_(6)样品,并且用浮区法生长单晶。掺杂浓度x选择为0、0.01、0.02和0.04。为了研究系统Cu_(3)B_(2)O_(6)的基态,测试了0.5 T磁场下材料((Cu_(1-x)Mg_(x))_(3)B_(2)O_(6)的磁化率。实验结果表明:随着掺杂浓度x的提升,系统的反铁磁序逐渐被破坏。比较了Mg掺杂和以前文献中Zn掺杂的物理效应的异同。We synthesized the powder samples of((Cu_(1-x)Mg_(x))_(3)B_(2)O_(6) and grew the single crystals by floating-zone method.The different doping level x is chosen as x=0,0.01,0.02 and 0.04.The magnetic susceptibility of the samples in a magnetic field of 0.5 T was measured in order to reveal the ground state of Cu_(3)B_(2)O_(6).The experimental results show that as the doping level x increases,the antiferromagnetic order in the system is gradually destroyed.We also compared the physical effects of Mg-substitution with those of Zn-substitution in the previous literature.

关 键 词：Cu_(3)B_(2)O_(6) 单晶 磁化率 反铁磁序 Mg掺杂 

分 类 号：O441.2[理学—电磁学]