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首页> 外文期刊>日本セラミックス協会学術論文誌 >Structural and ferroelectric properties of (1-x) Ba_(3.75)Y_(0.83)Nb_(10)O_(30)- XBa_(3.75)Sm_(0.83)Nb_(10)O_(30) solid solutions
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Structural and ferroelectric properties of (1-x) Ba_(3.75)Y_(0.83)Nb_(10)O_(30)- XBa_(3.75)Sm_(0.83)Nb_(10)O_(30) solid solutions

机译：（1-x）Ba_（3.75）Y_（0.83）Nb_（10）O_（30）-XBa_（3.75）Sm_（0.83）Nb_（10）O_（30）固溶体的结构和铁电性能

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摘要

Solid solutions of (1-X) Ba_(3.75)Y_(0.83)Nb_(10)O_(30)-XBa_(3.75)Sm_(0.83)Nb_(10)O_(30) were synthesized andexamined with regard to their ferroelectric properties. Noabnormal changes of lattice parameters were found over theinvestigated range of solid solution. Hysteresis curvemeasurement indicated that the polarization property could beimproved by employing different rare earth cations. The coercivefield (E_c) decreased as the composition approachedBa_(3.75)Sm_(0.83)Nb_(10)O_(30). The remanent polarization(P_r) of the solid solution was higher than those of end members,and maximum values were observed at X= 0.4-0.6. Variation ofCurie temperature and cell distortion showed the same tendencyas that of E_c Atomic displacement calculated from refinedstructural parameters agreed with the abnormal change of P_r.The contribution of larger macroscopic polarization for X=0.4-0.6 region could be apparently attributed to the largerdisplacement of Nb~(5+) ions.
机译：合成（1-X）Ba_（3.75）Y_（0.83）Nb_（10）O_（30）-XBa_（3.75）Sm_（0.83）Nb_（10）O_（30）的固溶体并检查其铁电性能。在固溶研究范围内，晶格参数无异常变化。磁滞曲线测量表明，采用不同的稀土阳离子可以改善极化性能。随着组成接近Ba_（3.75）Sm_（0.83）Nb_（10）O_（30），矫顽场（E_c）减小。固溶体的剩余极化强度（P_r）高于端基的极化强度，在X = 0.4-0.6时观察到最大值。居里温度和晶胞畸变的变化趋势与E_c由细化的结构参数计算得出的原子位移具有相同的趋势，这与P_r的异常变化相吻合.X = 0.4-0.6区域较大的宏观极化作用显然可以归因于Nb〜的较大位移（5+）个离子。

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