Mechanical properties of Ni_(0.83)Co_(0.15)Cu_(0.02)Fe_(1.9)O_(4-δ)+PbZr_(0.52)Ti_(0.48)O_(3)particulate composites by composite oscillator technique and the correlation with the results of magnetoelectric properties

查看全文 作　　者：M.Venkata [1]RAMANA;M.Penchal [2]REDDY;N.Ramamanohar [3]REDDY;[4]B.S.MURTY;K.V.SIVA [3]KUMAR;Shenhua [1]SONG 机构地区：[1]Shenzhen Key Laboratory of Advanced Materials,Department of Materials Science and Engineering,Shenzhen Graduate School,Harbin Institute of Technology,Shenzhen 518055,China;[2]Department of Physics,Changwon National University,Changwon,Republic of Korea;[3]Ceramic Composite Materials Laboratory,Department of Physics,Sri Krishnadevaraya University,Anantapur 515003,India;[4]Nanotechnology Laboratory,Department of Metallurgical and Materials Engineering,Indian Institute of Technology,Chennai 600036,India 出　　处：《Journal of Advanced Ceramics》索引2012年第1卷第4期,共10页 摘　　要：The xNi_(0.83)Co_(0.15)Cu_(0.02)Fe_(1.9)O_(4-δ)+PbZr_(0.52)Ti_(0.48)O_(3)(PZT)particulate magneto ferroelectric composites with x=0,0.1,0.2,0.3,0.4,0.5 and 0.6 mole fraction were prepared by conventional ceramic double sintering method.The presence of two phases(perovskite structure of ferroelectric phase and spinal structure of ferromagnetic phase)was confirmed by X-ray diffraction.The magnetoelectric(ME)property of the particulate composites was determined at room temperature as a function of intensity of magnetic field.The temperature variation of the longitudinal modulus(L)and the internal friction(Q−1)of these particulate composites at 104.3 kHz was studied in the wide temperature range 30-420℃.The temperature variation of the longitudinal modulus in each composition of these particulate composites showed two abrupt minima.One minimum coincided with the ferroelectric-paraelectric Curie transition temperature(θE)and the other with the ferromagnetic-paramagnetic Curie transition temperature(θM).The internal friction measurement also showed two sharp peaks in each composition corresponding to those temperatures where the minima were noticed in the temperature variation of the longitudinal modulus behaviour. 关 键 词：X-ray diffraction magnetoelectric effect piezoelectric coefficient internal friction Curie transition temperature