Substrate-Dependent Growth of HoMnO3 Films

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概要

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• Manganites with small rare earths ($\mathrm{RE} = \text{Ho}$, Er, Tm, Yb, Lu, or Y) and hexagonal structures belong to a class of materials known as hexagonal ferroelectrics, in contrast to those with large rare earths and orthorhombic, perovskite-related structures showing different physical properties. In this work, we study the effects of growth conditions on the stabilization of HoMnO3 films with both hexagonal and orthorhombic structures. Based on our experimental results, a HoMnO3 film with a hexagonal structure can be stabilized on Si(111) at 850 °C and above. Pure orthorhombic phases grow on SrTiO3(100), SrTiO3(110), LaAlO3(100), and LaAlO3(110) in a temperature range from 750 to 850 °C. Multiphase samples can be grown on MgO(100) at all temperatures.

• 2010-04-25

著者

• Ming-Wen Chu

  Center for Condensed Matter Sciences, National Taiwan University, Taipei 106, Taiwan

• Han Tai-Chun

  Department of Applied Physics, National University of Kaohsiung, Kaohsiung 811, Taiwan

• Lin Jauyn

  Center for Condensed Matter Sciences, National Taiwan University, Taipei 106, Taiwan

• Wu Chien-Ting

  Department of Material Science and Engineering, National Taiwan University, Taipei 106, Taiwan

• Cheng-Hsuan Chen

  Center for Condensed Matter Sciences, National Taiwan University, Taipei 106, Taiwan

• Chien-Ting Wu

  Department of Material Science and Engineering, National Taiwan University, Taipei 106, Taiwan

• Jauyn Grace

  Center for Condensed Matter Sciences, National Taiwan University, Taipei 106, Taiwan

• Tai-Chun Han

  Department of Applied Physics, National University of Kaohsiung, Kaohsiung 811, Taiwan

関連論文

• Substrate-Dependent Growth of HoMnO3 Films
• Magnetic Multiphases in Nd1-xSrxMnO3 Nanoparticles

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