Metastable Hexagonal Iron Oxides Crystallized from Undercooled Melts

• MASUNO Atsunobu

  Graduate School of Science and Technology, Hirosaki University

• MAGOME Eisuke

  Graduate School of Science, Hiroshima University

• MORIYOSHI Chikako

  Graduate School of Science, Hiroshima University

Bibliographic Information

Other Title

• 大過冷却融液から結晶化した準安定相六方晶鉄酸化物
• タイカ レイキャクユウエキ カラ ケッショウカ シタ ジュンアンテイソウ ロッポウショウテツ サンカブツ

Abstract

Containerless processing, which enables a melt to be levitated in air, prevents the melt from crystallization at the boundary between the melt and a container wall. Accordingly, deeper undercooling can be realized. Metastable hexagonal Lu_1－xSc_xFeO₃ （0 ≤ x ≤ 0.8） were directly solidified from an undercooled melt by containerless processing with an aerodynamic levitation furnace. Synchrotron X-ray diffraction measurements revealed that the crystal structure of the hexagonal phase was isomorphous to hexagonal ferroelectric RMnO₃ （R = rare earth ions） with a polar space group of P6₃cm. The weak ferromagnetic transition temperature increased from 150 K for x = 0 to 175 K for x = 0.7, which is the highest magnetic transition temperature among those of hexagonal RMnO₃ and RFeO₃.

Journal

• Nihon Kessho Gakkaishi

  Nihon Kessho Gakkaishi 58 (3), 139-144, 2016

  The Crystallographic Society of Japan

Details

• CRID: 1390282679066034432
• NII Article ID: 130005159760
• NII Book ID: AN00188364
• DOI: 10.5940/jcrsj.58.139
• ISSN: 18845576
• ISSN: 03694585
• NDL BIB ID: 027502751
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I027502751
• Web Site: https://www.jstage.jst.go.jp/article/jcrsj/58/3/58_139/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed