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在SrTiO3中纳米工程氧空位配置的原子尺度成像

David A Muller1, Naoyuki Nakagawa, Akira Ohtomo

  • 1Bell Laboratories, Lucent Technologies, Murray Hill, New Jersey 07974, USA. davidm@ccmr.cornell.edu

Nature
|August 6, 2004
PubMed
概括

研究人员精确地控制了酸 (SrTiO3) 超晶状体中的氧气空缺. 这种原子级控制为了解和设计氧化物材料提供了新的可能性.

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Schottky defects arise when some lattice points in a crystal, such as those in NaCl, remain unoccupied, creating lattice vacancies without disturbing the overall electrical neutrality of the crystal. This defect is common in ionic crystals where the positive and negative ions are similar in size, as seen in sodium chloride and cesium chloride. The presence of Schottky defects enables the crystal to conduct electricity to a small extent through an ionic mechanism. Electric fields cause nearby...
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