Origin of giant dielectric permittivity and weak ferromagnetic behavior in(1−x)LaFeO_(3−x)BaTiO_(3)(0.0≤x≤0.25)solid solutions

作     者：T.Sreenivasu P.Tirupathi K.Prabahar B.Suryanarayana K.Chandra Mouli 

作者机构：Department of Engineering PhysicsAndhra University College of Engineering Visakhapatnam-530003India Department of Physics Rajiv Gandhi University of Knowledge Technologies(AP-IIIT)RK Valley-516330India Advanced Magnetic Group Defense Metallurgical Research Laboratory Hyderabad-500058India 

出 版 物：《Journal of Advanced Dielectrics》 (先进电介质学报（英文）)

年 卷 期：2016年第6卷第4期

页      面：45-52页

学科分类：0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 0817[工学-化学工程与技术] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0702[理学-物理学] 

主　　题：Multiferroic ferromagnetic ceramics. 

摘      要：The solid solutions of(1-x)LaFeO_(3–x)BaTiO_(3)(0.0≤x≤0.25)have been synthesized successfully by the conventional solid-state reaction *** temperature(RT)X-ray diffraction studies reveal the stabilization of orthorhombic phase with Pbnm space *** solubility in the perovskite series was demonstrated up to x=*** dielectric permittivity shows colossal dielectric constant(CDC)at *** doping of BaTiO_(3)in LaFeO_(3)exhibit pronounced CDC up to a composition x=0.15,further it starts to *** frequency-dependent dielectric loss exhibits polaronic conduction,which can attribute to presence of multiple valence of *** relaxation frequency and polaronic conduction mechanism was shifted towards RT as function of ***,large magnetic moment with weak ferromagnetic behavior is observed in doped LaFeO_(3) solid solution,which might be the destruction of spin cycloid structure due to insertion of Ti in Fe–O–Fe network of LaFeO_(3).