Magneto-electric behaviors of La_(0.67-x)Nd_(x)Sr_(0.33)MnO_(3) system  

作　　者：Ning Liu Teng Guo Guo-Qing Yan Guang Zhu Huan-Yin Guo 

机构地区：[1]College of Machinery and Automobile Engineering,Anhui Polytechnic University,Wuhu 241000,China [2]Anhui Key Laboratory of Spin Electron and Nanomaterials(Cultivating Base),Suzhou College,Suzhou 234000,China [3]College of Chemistry and Materials Engineering,Anhui Science and Technology University,Fengyang 233100,China [4]National Laboratory of Solid State Microstructures,Nanjing University,Nanjing 210093,China

出　　处：《Rare Metals》2022年第4期1357-1363,共7页稀有金属（英文版）

基　　金：the Key Programme of Grand Basic Research Programme of China(No.2007CB925001);the National Key Basic Research Programme of China(No.001CB610604);the Grand Natural Science Research Programme of Anhui Education Department(Nos.ZD2007003-1 and KJ2010A074);the Anhui Provincial Natural Science Foundation(No.1308085MA11)。

摘　　要：The polycrystalline samples La_(0.67-x)Nd_(x)Sr_(0.33)MnO_(3)(x=0.1,0.2,0.3,0.4,0.5)were prepared by standard solid-state reaction method,and the M–T curves,electron spin resonance(ESR)curves,infrared spectra,Raman spectra,ρ–T curves and MR–T curves of the compounds above were measured.The results show that single phase can be obtained at different Nd substitution ratios,and with the increase in Nd doping,the magnetic structure of the system transforms from long-range ferro-magnetic order to spin cluster glass state and antiferro-magnetic state;and the phase separation appears in the samples with x=0.3 and 0.4.The transport property exhibits variation with the increase in Nd doping,and the electric behavior of the sample transforms(from metal state to insulator–metal transition,and then insulator state)is accompanied by colossal magnetoresistance(CMR)effect,which can be attributed to the different couplings of sublattices induced by Nd doping and the interface tun-neling effect related to the spin.

关 键 词：Magnetic structure Transport behavior SUBLATTICE Interface tunneling effect 

分 类 号：TB34[一般工业技术—材料科学与工程]