Nd、Mn离子掺杂对铁氧体LaFeO_3的结构和性能影响  

The Structure and Properties Influences on Nd,Mn Ions Doped Ferrite LaFeO_3

作　　者：李建德[1] 罗广圣[1] 姜贵文[2] 李文善[1] 周正有[1] 

机构地区：[1]南昌大学材料科学与工程学院,江西南昌330031 [2]南昌大学共青学院,江西共青332020

出　　处：《南昌大学学报（理科版）》2010年第3期279-283,共5页Journal of Nanchang University(Natural Science)

摘　　要：采用高温固相反应法制备了LaFe1-xMnxO3(x=0,0.1,0.2,0.3,0.4,0.5)和La1-xNdxFeO3(x=0.2,0.4,0.6,0.8,1.0)2个系列样品,分别研究了Mn离子部分替代Fe位掺杂、Nd离子部分替代La位掺杂对材料结构和性能的影响。研究结果表明:随着Nd离子掺杂浓度的增大,样品的晶格参数和晶胞体积均呈减小的趋势,随着Mn离子掺杂浓度的增大,样品的晶格参数和晶胞体积均有所增加。Mn离子掺杂使样品的居里温度呈现升高趋势,而Nd离子的掺杂使样品的居里温度呈现降低趋势。Using high-temperature solid phase reaction prepared LaFe1-xMnxO3 （x=0,0.1,0.2,0.3,0.4,0.5） and La1-xNdxFeO3（x=0.2,0.4,0.6,0.8,1.0） two series of samples,we examine the partial substitution of Mn ion Fe-doped、 Nd3＋ ion partial substitution of La-doped material structure and properties.The results show that with Nd3＋ ion doping concentration increases,the sample lattice parameters and cell volume showed decreasing trend,Mn-doped with increasing concentration of the samples,the lattice parameters and cell volume has been increased.The Curie temperature of Mn-doped sample increased,and the Curie temperature of Nd3＋ ion doped sample showed decreased.

关 键 词：高温固相反应法 钙钛矿结构LaFeO3 离子掺杂 晶体结构 居里温度 

分 类 号：TM271.2[一般工业技术—材料科学与工程]