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ID 19290
本文ファイル
著者
Prokeš, Karel
Tahara, Tomohiro
Fujita, Toshizo
Goshima, Hiroshi
Mihalik, Marián
Menovsky, Alois A.
Fukuda, Shuichi
Sakurai, Junji
抄録(英)
Structural study by means of x-ray powder diffraction and Laue technique show that UIrGe crystallizes in the orthorhombic TiNiSi-type structure. Magnetic measurements reveal a huge magnetic anisotropy in UIrGe with the hard magnetization axis along the a axis, i.e., along the direction of U-U zig-zag chains. Comprehensive magnetic, electrical-transport, thermopower, and thermal studies on a single crystal indicate the magnetic order of UIrGe below 15.8 K with an additional transition at 14.1 K. Magnetic and transport measurements on the polycrystalline sample, however, suggest that UIrGe orders magnetically at 16.4 K. All anomalies shift towards lower temperatures with increasing magnetic field suggesting that an antiferromagnetic ground state takes place in UIrGe at low temperatures. The drastically different low-temperature behavior of the electrical resistivity for single crystal (increasing with decreasing temperature) as compared with that for the polycrystalline sample (electrical resistivity decreases with lowering temperature) suggests different physical properties of bulk and surface areas. Resistivity and thermoelectric measurements indicate that a small gap across a part of the Fermi surface is established in the case of the single crystal.
掲載誌名
Physical Review B - Condensed Matter and Materials Physics
60巻
13号
開始ページ
9532
終了ページ
9538
出版年月日
1999-10-01
出版者
American Physical Society
ISSN
1098-0121
NCID
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
publisher
権利情報
Copyright (c) 1999 The American Physical Society.
関連情報URL
部局名
先端物質科学研究科