Dielectric response and pyroelectric properties of lead-free ferroelectric Ba_(3)(VO_(4))_(2)

作     者：Biswajit Pati R.N.P.Choudhary Piyush R.Das B.C.Sutar 

作者机构：Department of PhysicsJ.K.B.K.Government CollegeCuttack 753004India Department of PhysicsInstitute of Technical Education and Research Siksha O Anusandhan UniversityBhubaneswar 751030India Department of PhysicsVeer Surendra Sai University of Technology BurlaSambalpur 768018India Department of PhysicsHi-Tech College Engineering Bhubaneswar 751025India 

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

年 卷 期：2015年第5卷第1期

页      面：43-49页

学科分类：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] 

主　　题：X-ray diffraction Palmierite structure dielectric properties pyroelectric properties 

摘      要：The current paper presents results of dielectric response,pyroelectric behavior and conductivity study of lead-free ferroelectric barium orthovanadate(Ba_(3)(VO_(4))_(2)or Ba_(3)V_(2)O_(8))ceramic,for a wide range of temperature and *** X-ray diffraction study suggests the formation of a single-phase compound in trigonal crystal *** SEM micrograph of gold-coated pellet sample shows well-defined and homogeneous *** studies of dielectric parameters(ε_(r)and tanδ
)of the compound as a function of temperature and frequency reveal their independence over a wide range of temperature and *** nature of Polarization versus electric field(P-E)hysteresis loop of Ba_(3)V_(2)O_(8)at room temperature suggests its ferroelectric *** temperature dependence of pyroelectric coefficient and figure of merits of the sample support its dielectric *** nature of variation of dc conductivity with temperature confirms the Arrhenius and negative temperature coefficient of resistance(NTCR)behavior of the material.