功能材料
功能材料
공능재료
JOURNAL OF FUNCTIONAL MATERIALS
2012年
20期
2742-2746,2750
,共6页
组分梯度铁电薄膜%介电性能%极化偏移
組分梯度鐵電薄膜%介電性能%極化偏移
조분제도철전박막%개전성능%겁화편이
compositionally graded ferroelectric thin films%dielectric properties%polarization offset
与均匀组分铁电薄膜相比，组分梯度铁电薄膜有很多优异的性能，其介电性能显著提高，从而有效改善了微波调谐器件的性能。上、下梯度铁电薄膜的性能也不相同，但目前尚无研究者从实验上证明其产生差异的原因。另外，组分梯度铁电薄膜的电滞回线的极化偏移仍然是一个比较有争议的问题。因此，研究组分梯度铁电薄膜在实际应用和完善理论研究方面均具有重要意义。综述了近年来对组分梯度铁电薄膜的研究进展并提出了研究中需要解决的问题。
與均勻組分鐵電薄膜相比，組分梯度鐵電薄膜有很多優異的性能，其介電性能顯著提高，從而有效改善瞭微波調諧器件的性能。上、下梯度鐵電薄膜的性能也不相同，但目前尚無研究者從實驗上證明其產生差異的原因。另外，組分梯度鐵電薄膜的電滯迴線的極化偏移仍然是一箇比較有爭議的問題。因此，研究組分梯度鐵電薄膜在實際應用和完善理論研究方麵均具有重要意義。綜述瞭近年來對組分梯度鐵電薄膜的研究進展併提齣瞭研究中需要解決的問題。
여균균조분철전박막상비，조분제도철전박막유흔다우이적성능，기개전성능현저제고，종이유효개선료미파조해기건적성능。상、하제도철전박막적성능야불상동，단목전상무연구자종실험상증명기산생차이적원인。령외，조분제도철전박막적전체회선적겁화편이잉연시일개비교유쟁의적문제。인차，연구조분제도철전박막재실제응용화완선이론연구방면균구유중요의의。종술료근년래대조분제도철전박막적연구진전병제출료연구중수요해결적문제。
Compared with the homogeneous ferroelectrie thin films, the compositionally graded ferroelectric thin films have many excellent performances. The dielectric properties of the compositionally graded ferroelectric thin films are significantly enhanced. Therefore, the performance of the tunable microwave device applications is effectively improved. The properties of up and down graded ferroelectric thin films are also different. Howev- er, the cause of these differences has not been experimentally proved. In addition, the polarization offset of the hysteresis loop is still a controversial problem. Thus, researchers of compositionally graded ferroelectric thin films are of great significance both in the practical applications and the improvements of the theories. The arti- cle reviews the researches of compositionally graded ferroelectric thin films, and also proposes some problems needed to be solved.
