Hole-Doping Effect on the Spin State and Microscopic Magnetic Properties of La1-xSrxCoO3(0≦x≦0.5)--59Co and 139La NMR Measurements

• Itoh Masayuki

  Department of Physics, Faculty of Science, Chiba University, Yayoi–cho, Inage–ku, Chiba 263

• Natori Ikuomi

  Department of Physics, Faculty of Science, Chiba University, Yayoi–cho, Inage–ku, Chiba 263

書誌事項

タイトル別名

• Hole-Doping Effect on the Spin State and Microscopic Magnetic Properties of La1-xSrxCoO3 (0.LEQ.x.LEQ.0.5): 59Co and 139La NMR Measurements.
• Hole Doping Effect on the Spin State an
• Hole-Doping Effect on the Spin State and Microscopic Magnetic Properties of<b><i>L</i><i>a</i>_1-<i>x</i><i>S</i><i>r</i>_<i>x</i><i>C</i><i>o</i><i>O</i>₃</b>(0≤<i><i>x</i></i>≤0.5):<b>⁵⁹<i>C</i><i>o</i></b>and<b>¹³⁹<i>L</i><i>a</i></b>NMR Measurements

抄録

^59Co and ^139La NMR measurements have been made to reveal microscopically the hole-doping effect on the spin state and magnetic properties of La_1-xSr_xCoO₃ (0{\le}x{\le}0.5). The signal from the Co atoms with no Sr nearest neighbors was observed in the spin-glass region below x_c--0.18. From the analysis of the temperature dependence of the Knight shift, the ground state of such Co atoms was found to be the trivalent low-spin state ¹A_1g. Above x_c, we observed at 4.2, K the ^59Co and ^139La signals which come from the cluster-glass region with a finite ferromagnetic correlation. Thus, it was microscopically confirmed that the boundary between the two regions is located at x_c--0.18.

収録刊行物

• Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ

  Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ 64 (3), 970-975, 1995

  一般社団法人 日本物理学会

キーワード

• hole doping
• high spin
• low spin
• spin glass
• cluster glass
• NMR
• La<SUB>1-x</SUB>Sr<SUB>x</SUB>CoO<SUB>3</SUB>

詳細情報

• CRID: 1390282679158961536
• NII論文ID: 110001956902
• NII論文ID: 210000099224
• NII書誌ID: AA00704814
• DOI: 10.1143/jpsj.64.970
• BIBCODE: 1995JPSJ...64..970I
• ISSN: 13474073
• ISSN: 00319015
• NDL書誌ID: 3609616
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I3609616
• Web Site: http://journals.jps.jp/doi/pdf/10.1143/JPSJ.64.970
• 本文言語コード: en
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