Synthesis and Magnetoresistance Effect of Sr2FeMoO6 by the Molybdic Acid Gelation

• Ito Masahiro

  Graduate School of Engeneering, Hokkaido University

• Takeda Takashi

  Graduate School of Engeneering, Hokkaido University

• Tamura Hiroki

  Graduate School of Engeneering, Hokkaido University

• Kikkawa Shinichi

  Graduate School of Engeneering, Hokkaido University

Bibliographic Information

Other Title

• 導電性セラミック材料　　モリブデン酸ゲル化法によるＳｒ２ＦｅＭｏＯ６の合成と磁気抵抗効果
• モリブデンサン ゲルカホウ ニ ヨル Sr2FeMoO6 ノ ゴウセイ ト ジキ テイコウ コウカ

Abstract

Double perovskite Sr₂FeMoO₆ was prepared by using gelation of (NH₄)₆Mo₇O₂₄⋅4H₂O from aqueous solution in presence of Sr²⁺ and Fe³⁺ nitrates, The dried gel was pulverised and fired at 700°C for 6 hrs. It was fired again in H₂/Ar=3% flow for 3 hrs in temperature range of 850-1000°C. The products were slightly contaminated with impurities of α-Fe and FeMoO₄. They were annealed at 1000-1200°C in sealed tube. Inner part of the annealed sample at 1100°C showed magnetoresitance effect of 8.3% at room temperature with a comparable amount of impurity. Ordering of Fe³⁺ and Mo⁵⁺ was also enhanced.

Journal

• Journal of the Japan Society of Powder and Powder Metallurgy

  Journal of the Japan Society of Powder and Powder Metallurgy 51 (12), 864-868, 2004

  Japan Society of Powder and Powder Metallurgy

Keywords

• Sr<SUB>2</SUB>FeMoO<SUB>6</SUB> double-perovskite
• sol-gel method
• magnetoresistance
• half-metal

Details

• CRID: 1390001206308729472
• NII Article ID: 10014239346
• NII Book ID: AN00222724
• DOI: 10.2497/jjspm.51.864
• ISSN: 18809014
• ISSN: 05328799
• NDL BIB ID: 7201717
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7201717
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed