Ba(Zn1/3Ta2/3)O3 の化学量論組成近傍の組成変化が及ぼす超格子オーダリングとマイクロ波帯の Q 値への影響
Ba(Zn1/3Ta2/3)O3 の化学量論組成近傍の組成変化が及ぼす超格子オーダリングとマイクロ波帯の Q 値への影響
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Ba(Zn1/3Ta2/3)O3化学计量成分附近的成分变化对微波波段超晶格有序度和Q值的影响
DOI:
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发表时间:
2005
期刊:
影响因子:
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通讯作者:
齊 大里
中科院分区:
文献类型:
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作者:
英一 古賀;博紀 森分;健一 柿本;齊 大里
Influence of composition deviation from around Ba(Zn1/3Ta2/3)O3 (BZT) on superlattice ordering and microwave Q factor were studied. The superlattice ordering ratio (ordered-disordered structure formation) was found to be dependent on slight composition deviations around BZT. Ordered structure with perovskite single phase was obtained in the vicinity of the stoichiometric BZT. In this region, the significant high Q factor (Q•f=110000 GHz) was found. Disordered perovskite with lower density and secondary phase in the ordered perovskite were thought to be the causes of Q factor decrement. Suppressions of the secondary phases and the disordered phases by strict composition control can provide further Q factor improvements for the BZT system.