(100)YSZ/(100)Si基板構造上にスパッタ法により形成したヘテロエピタキシャル(100)Ir及び(001)PZT薄膜の膜質特性
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概要
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エピタキシャル(100)YSZ/Si基板構造上にスパッタ法によりIr及びPZT薄膜のエピタキシャル成長を行い、それらの膜の結晶性及び電気的特性を評価した。Ir薄膜は、堆積速度が遅いと(100)面に、速いと(111)面に配向して、エピタキシャル成長した。(100)及び(111)主配向Ir膜上に堆積したPZT薄膜は、それぞれ基板温度600及び650℃以上でエピタキシャル成長するが、基板温度が高くなるに従い、Ir薄膜とPZT薄膜の界面で構成元素の反応や相互拡散が生じた。また、PZT薄膜の膜質は、Ir薄膜が(100)主配向になるに従い良くなり、基板温度600℃でエピタキシャル成長した(001)PZT薄膜は、3V振幅の正弦波電圧で十分に飽和した角形のP-Eヒステレシス特性を示し、その2Prは80μC/cm^2と良好であった。
- 社団法人電子情報通信学会の論文
- 1999-02-16
著者
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堀田 将
北陸先端科学技術大学院大学材料科学研究科
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堀田 將
北陸先端科学技術大学院大学材料科学研究科
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堀井 貞義
北陸先端科学技術大学院大学材料科学研究科
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Hayashi Shigenori
Semiconductor Equipment System Laboratory Hitachi Kokusai Electric Inc.
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堀井 將
北陸先端科学技術大学院大学 材料科学研究科
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堀井 貞義
北陸先端科学技術大学院大学材料科学研究科:(株)日立国際電気
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