^<27>Al-NMR and NQR Studies in the Antiferromagnetic Heavy Fermion CePd_2Al_3
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概要
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Systematic measurements of the NQR spectrum and the nuclear-spin-lattice relaxation rate, 1/T_1, of ^<27>Al in the heavy-fermion antiferromagnetic (AF) compound CePd_2Al_3 have revealed that the magnetic nature dramatically changes from showing long-range and inhomogeneous AF ordering for annealed and as-cast polycrystals, respectively, to a disappearance of any type of magnetic ordering for single crystals. A close relationship between the magnetic ordering and the structural disorder in the Al layers isolated from the Ce-Pd layers is demonstrated. The exchange coupling via the Al layers along the c-axis, which leads to the AF ground state, critically depends on the occupation and distribution of Al atoms as proposed by Mentink et al. It is pointed out that the randomness remaining inevitably in the Al layers masks the intrinsic magnetic excitation in the AF ordered state.
- 社団法人日本物理学会の論文
- 1994-11-15
著者
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TOU Hideki
Department of Quantum Matter, AdSM, Hiroshima University
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KITAOKA Yoshio
Department of Materials Engineering Science, Graduate School of Engineering Science, Osaka Universit
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Asayama Kunisuke
Department of Material Physics, Faculty of Engineering Science, Osaka University
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Asayama Kunisuke
Department Of Physical Science Graduate School Of Engineering Science Osaka University
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Asayama Kunisuke
Department Of Material Physics Faculty Of Engineering Science Osaka University
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Tou Hideki
Kobe Univ. Kobe Jpn
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Tou H
Osaka Univ. Toyonaka
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Tou Hideki
Department Of Physics Tokyo Metropolitan University
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Tou Hideki
Department Of Material Physics Faculty Of Engineering Science Osaka University
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Menovsky A
Kamerlingh Onnes Laboratory Leiden University
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Menovsky A.
Kamerlingh Onnes Laboratory Leiden University
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Kitaoka Y.
Graduate School Of Science Osaka University
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Kitaoka Yoshio
Department Of Material Physics Faculty Of Engineering Science Osaka University
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Mydosh A.
Kamerlingh Onnes Laboratory Leiden University
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Nieuwenhuys J.
Kamerlingh Onnes Laboratory Leiden University
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Mentink M.A.
Kamerlingh Onnes Laboratory, Leiden University
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Mentink M.a.
Kamerlingh Onnes Laboratory Leiden University
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Kawasaki Y
Department Of Quantum Materials Science University Of Tokushima
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Tokumoto H
Department Of Quantum Matter Adsm Hiroshima University
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Kishimoto Y
Department Of Physics Faculty Of Engineering Tokushima University
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Asayama Kunisuke
Department of Material Physics, Faculty of Engineering Science, Osaka University:Presently Professor Emeritus of Osaka University
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