清华大学材料科学与工程研究院《材料科学论坛》

学术报告

题目：

A Thin Film Approach to Engineering Functionality into Oxides

报告人：

Darrell G. Schlom

（Department of Materials Science and Engineering，Cornell University）

时间：

2009年6月1日（星期一） 10：00

地  点：

清华大学材料院学术报告厅（逸夫技术科学楼2－321）

联系人：南策文 老师 62773587

欢迎广大师生踊跃参加

Abstract:

The diverse functional properties available in oxides have been established primarily through measurements on bulk samples.  But when it comes to utilizing these properties in microelectronics, thin film synthesis techniques come into play and with them a different set of tricks are available to enhance the properties of oxides.  Here I describe the use of reactive molecular-beam epitaxy (MBE) to synthesize multifunctional oxides, including ferroelectrics, ferromagnets, and materials that are both at the same time.  The structural perfection of the resulting films is shown to surpass the best single crystals available of these materials; indeed multifunctional oxides with structural quality rivaling semiconductors have been achieved.  Standard semiconductor tricks involving epitaxial strain, confined thickness, and modulation doping can also be applied to multifunctional oxide thin films and results of fundamental scientific importance as well as revealing the tremendous potential of utilizing multifunctional oxide thin films to create devices with enhanced performance will be shown.