Magnetic Phase Diagram of the Triangular Lattice Antiferromagnet CuFe_<1-x>Al_xO_2(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
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概要
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We have performed magnetic susceptibility, neutron diffraction and specific heat measurements on the triangular lattice antiferromagnet CuFe_<1-x>Al_xO_2 for x≤0.050. A magnetic phase diagram for temperature vs x was determined. The various magnetically ordered phases compete with each other on the x-T magnetic phase diagram, strongly suggesting that the quasi-Ising orderings are stabilized in CuFeO_2 with delicate balance of competing interactions. In the ground state for 0.014<x<0.030 [low-temperature (LT) phase], the magnetic structure consists of two magnetic modulations with slightly different wave numbers. Moreover, we observed the change in magnetic diffraction patterns in the LT phase, which corresponds to a crystallographic distortion from "hexagonal" to "orthorhombic", suggesting that the Ising anisotropy in CuFeO_2 is closely related to the crystallographic distortion.
- 社団法人日本物理学会の論文
- 2005-09-15
著者
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野田 幸男
Institute Of Multidisciplinary Research For Advanced Materials Tohoku University
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野田 幸男
阪大基礎工
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MITSUDA Setsuo
Department of Physics, Faculty of Science, Tokyo University of Science, Tokyo
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NODA Yukio
Institute of Multidisciplinary Research for Advanced Materials, Tohoku University
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TERADA Noriki
Department of Physics, Faculty of Science, Tokyo University of Science
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Mitsuda Setsuo
Department Of Physics Science University Of Tokyo
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Mitsuda Setsuo
Depertment Of Physics Science University Of Tokyo:guest Scientist At Bnl
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Mitsuda Setuo
Department Of Physics Faculty Of Science Tokyo University Of Science
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Mitsuda Setsuo
Department Of Physics Faculty Of Science Tokyo University Of Science Tokyo
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Mitsuda Setsuo
Department Of Physics Faculty Of Science Science University Of Tokyo
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Mitsuda Setsuo
Physics Department Science University Of Tokyo
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Terada Noriki
Department Of Physics Faculty Of Science Tokyo University Of Science
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FUJII Toru
Department of Physics, Faculty of Science, Tokyo University of Science
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SOEJIMA Kenichiro
Department of Physics, Faculty of Science, Tokyo University of Science
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DOI Ikuo
Department of Physics, Faculty of Science, Tokyo University of Science
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KATORI Hiroko
RIKEN (The Institute of Physical and Chemical Research)
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Noda Yukio
The Graduate School Of Natural Science And Technology Okayama University
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Terada Noriki
National Inst. Materials Sci. Ibaraki
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Noda Yukio
Institute Of Multidisciplinary Research For Advanced Materials Tohoku University
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Noda Yukio
Faculty Of 1engineering Sciences Osaka University
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Noda Yukio
Laboratory Of Soil Science Faculty Of Agriculture Kobe University
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Katori Hiroko
Riken
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Mitsuda Setsuo
Tokyo Univ. Sci. Tokyo
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Soejima Kenichiro
Department Of Physics Faculty Of Science Tokyo University Of Science
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Doi Ikuo
Department Of Physics Faculty Of Science Tokyo University Of Science
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Fujii Toru
Department Of Mechanical Engineering And Systems Doshisha University
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Fujii Toru
Department Of Physics Faculty Of Science Tokyo University Of Science
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NODA Yukio
Institute of Multidisciplinary Research for Advanced Materials
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