Neutron investigation of Ru-doped Nd_1/2Ca_1/2MnO₃–Comparison with Cr-doped Nd_1/2Ca_1/2MnO₃–

• Moritomo Yutaka

  Department of Applied Physics, Nagoya University, Nagoya 464-8603

• Machida Akihiko

  Department of Crystalline Materials Science, Nagoya University, Nagoya 464-8603

• Nonobe Toshihiko

  Department of Applied Physics, Nagoya University, Nagoya 464-8603

• Ohoyama Kenji

  Institute for Materials Research, Tohoku University, Sendai 980-8577

書誌事項

タイトル別名

• Neutron investigation of Ru-doped Nd1/2Ca1/2MnO3. Comparison with Cr-doped Nd1/2Ca1/2MnO3.

抄録

Lattice and magnetic properties are investigated for 3% Ru- and Cr-doped Nd_1/2Ca_1/2MnO₃. The parent Nd_1/2Ca_1/2MnO₃ is a charge-ordered insulator (T_CO = 250 K). With decreasing temperature below ≈ 210 K, these compounds are separated into two perovskite phases, that is, the long-c and short-c phases. The long-c region shows a ferromagnetic transition at T_C ≈ 210 K for the Ru-doped compound and ≈ 130 K for the Cr-doped compound, while the short-c region shows antiferromagnetic transition at T_N ≈ 150 K for Ru and ≈ 110 K for Cr. We discuss the origin of the enhanced T_C for the Ru-doped compound in terms of the effective one-electron bandwidth W of the e_g-band.

収録刊行物

• Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ

  Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ 71 (7), 1626-1629, 2002

  一般社団法人 日本物理学会

キーワード

• perovskite manganite
• B-site substitution
• neutron powder diffraction
• Rietveld analysis

詳細情報

• CRID: 1390001204183809152
• NII論文ID: 210000103740
• NII論文ID: 110001971745
• NII書誌ID: AA00704814
• DOI: 10.1143/jpsj.71.1626
• BIBCODE: 2002JPSJ...71.1626M
• ISSN: 13474073
• ISSN: 00319015
• NDL書誌ID: 6219569
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6219569
• Web Site: http://journals.jps.jp/doi/pdf/10.1143/JPSJ.71.1626
• 本文言語コード: en
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