Preparation of novel potassium, lanthanum-iron oxides and their magnetic properties

• Yamamoto Tatsuhiro

  Graduate School of Science and Engineering, Saitama University

• Kamishima Kenji

  Graduate School of Science and Engineering, Saitama University

• Kakizaki Koichi

  Graduate School of Science and Engineering, Saitama University

• Hiratsuka Nobuyuki

  Graduate School of Science and Engineering, Saitama University

抄録

We have investigated the synthesis conditions, and the magnetic properties of M-type ferromagnetic potassium, lanthanum-iron oxides. The samples were prepared by solid-state-reaction. It is found that a new M-type ferrite can be effectively synthesized at 1275°C from the starting materials pulverized with a planetary ball mill. The magnetic transition temperature of the sample is 440°C which is quite close to that of the magnetoplumbite-type ferrite. EPMA compositional analysis for this new M-type ferrite shows the composition ratio of K : La : Fe = 0.75 : 0.90 : 18.58. From this result, the chemical formula of the magnetoplumbite phase in this sample is estimated to be K_0.45La_0.55Fe₁₂O_19-δ.

収録刊行物

• Transactions of the Materials Research Society of Japan

  Transactions of the Materials Research Society of Japan 37 (2), 271-274, 2012

  一般社団法人 日本MRS

キーワード

• potassium
• lanthanum
• magnetoplumbite
• LaFe₁₂O₁₉

詳細情報

• CRID: 1390001205512450560
• NII論文ID: 130003399099
• DOI: 10.14723/tmrsj.37.271
• COI: 1:CAS:528:DC%2BC38Xht1aksL3J
• ISSN: 21881650
• ISSN: 13823469
• Web Site: https://www.jstage.jst.go.jp/article/tmrsj/37/2/37_271/_pdf
• 本文言語コード: en
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