Magnetic and Transport Properties of LaCo1-xNixO3-Comparison with with La1-xSrxCoO3

• Kobayashi Yoshihiko

  Department of Applied Physics and Chemistry, University of Electro–Communications, Tokyo 182–8585

• Murata Satoru

  Department of Applied Physics and Chemistry, University of Electro–Communications, Tokyo 182–8585

• Asai Kichizo

  Department of Applied Physics and Chemistry, University of Electro–Communications, Tokyo 182–8585

• Tranquada J. M.

  Brookhaven National Laboratory, Upton, New York 11973, USA

• Shirane G.

  Brookhaven National Laboratory, Upton, New York 11973, USA

• Kohn Kay

  Department of Physics, Waseda University, Okubo–3, Tokyo 169–8555

書誌事項

タイトル別名

• Magnetic and Transport Properties of LaCo1-xNixO3-Comparison with La1-xSr2CoO3.
• Magnetic and Transport Properties of LaCo_{<b>1-<i><i>x</i></i></b>}Ni_{<i><i>x</i></i>}O_<b>3</b>-Comparison with La_{<b>1-<i><i>x</i></i></b>}Sr_{<i><i>x</i></i>}CoO_<b>3</b>

抄録

We have investigated magnetization, neutron scattering, resistivity, thermoelectric power and Hall effect in LaCo_1-xNi_xO₃ (x=0.05 and 0.1) single crystals. At low temperatures, they show spin-glass behavior with a strong ferromagnetic correlation. Around 500, K, spin state transition from the intermediate spin state (S=1) to the high spin state (S=2) accompanied by an insulator-to-metal transition is observed as in undoped LaCoO₃. These magnetic properties of LaCo_1-xNi_xO₃ are very similar to those previously reported for La_1-xSr_xCoO₃. The low-temperature transport properties of both LaCo_1-xNi_xO₃ and La_1-xSr_xCoO₃ exhibit the characteristics of an insulator near the insulator-to-metal transition. The sign of the carrier is verified to be positive in both systems from the thermoelectric power measurement. However, the sign of the Hall coefficient of LaCo_1-xNi_xO₃ is negative. These transport properties are discussed in terms of small polaron hopping mechanism.

収録刊行物

• Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ

  Ｊｏｕｒｎａｌ　ｏｆ　ｔｈｅ　Ｐｈｙｓｉｃａｌ　Ｓｏｃｉｅｔｙ　ｏｆ　Ｊａｐａｎ 68 (3), 1011-1017, 1999

  一般社団法人 日本物理学会

キーワード

• LaCo<SUB>1-x</SUB>Ni<SUB>x</SUB>O<SUB>3</SUB>
• La<SUB>x</SUB>Sr<SUB>1-x</SUB>CoO<SUB>3</SUB>
• magnetization
• neutron scattering
• thermoelectric power
• Hall effect
• spin-glass state
• polaron hopping

詳細情報

• CRID: 1390282679157944704
• NII論文ID: 110001955455
• NII論文ID: 210000101473
• NII書誌ID: AA00704814
• DOI: 10.1143/jpsj.68.1011
• BIBCODE: 1999JPSJ...68.1011K
• ISSN: 13474073
• ISSN: 00319015
• NDL書誌ID: 4700155
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4700155
• Web Site: http://journals.jps.jp/doi/pdf/10.1143/JPSJ.68.1011
• 本文言語コード: en
• データソース種別:
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