研究者詳細 - 摂待　力生

MISC - 摂待　力生

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3a-YF-1 PrPb_3のフェルミ面(磁性(f電子系))

青木大, 東恒, メリケアプリーズ, 摂待力生, 稲田佳彦, 大貫惇睦, KLETOWSKI Zbigniew

日本物理学会講演概要集. 年会 51 ( 3 ) 223 - 223 1996年3月

3P-YB-4 UPt_3の低温磁化II(磁性(f電子系))

天谷健一, 池田昌隆, 田山孝, 網塚浩, 榊原俊郎, 前澤邦彦, 摂待力生, 大貫惇睦

日本物理学会講演概要集. 年会 51 ( 3 ) 231 - 231 1996年3月

dHvA effect study of metamagnetic transition in CeRu2Si2 .2. The state above the metamagnetic transition

M Takashita, H Aoki, T Terashima, S Uji, K Maezawa, R Settai, Y Onuki

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 65 ( 2 ) 515 - 524 1996年2月

記述言語：英語出版者・発行元：PHYSICAL SOC JAPAN

We have performed an extensive dHvA effect study of CeRu2Si2 to gain more insight into the nature of the metamagnetic transition. The angular dependence of the dHvA frequencies confirms the transition of the Fermi surfaces from those of the itinerant f electron below the metamagnetic transition field (H-m) to those of the localized f electron above H-m. The field dependence of the frequencies and effective masses are measured for all the frequencies observed with fields parallel to [001]. A waveform analysis suggests that the Fermi surfaces of the up and down spin electrons are similar in size, whereas the effective masses are significantly different. The amplitudes of the dHvA oscillations and their held dependence are anomalous above H-m, implying that the dHvA oscillations above H-m may possibly come from a state which is not well developed near H-m.

DOI： 10.1143/JPSJ.65.515

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Metamagnetic transition in f-electron systems studied by de Haas-van Alphen experiments

Yoshichika Onuki, Rikio Settai, Haruyoshi Aoki

Physica B: Condensed Matter 216 ( 3-4 ) 323 - 325 1996年1月

Metamagnetic transition in PrCu2 studied by the de Haas-van Alphen effect

R Settai, M Abliz, P Ahmet, H Azuma, D Aoki, Y Yoshida, K Sugiyama, Y Onuki

PHYSICA B 216 ( 3-4 ) 326 - 328 1996年1月

記述言語：英語出版者・発行元：ELSEVIER SCIENCE BV

We have studied a metamagnetic transition in PrCu2 where there is a cooperative Jahn-Teller effect occurring below 8 K. This transition brings about a conversion between an easy and a hard axis in magnetization, which is reflected in a drastic change of the de Haas-van Alphen amplitude. The metamagnetic field decreases for the field along the c-axis when the transition is repeated. On the other hand, it is almost constant for the a-axis.

DOI： 10.1016/0921-4526(95)00507-2

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High-field magnetization and phase diagram of NdCu2 single crystal

K Sugiyama, R Settai, H Azuma, H Sugawara, Y Aoki, H Sato, K Kindo, Y Onuki

PHYSICA B 216 ( 3-4 ) 316 - 318 1996年1月

記述言語：英語出版者・発行元：ELSEVIER SCIENCE BV

A high-field magnetization study of single crystal NdCu2 has been carried out along the a-, b- and c-axes up to 50 T below 6 K. A metamagnetic transition is found along all the axes, and the magnetic phase diagrams are obtained. The magnetization along the a-axis reaches 3.1 mu(B)/Nd at 51 T, exhibiting de Haas-van Alphen oscillation with a frequency of 1.55 x 10(6) and 1.5 x 10(6) Oe.

DOI： 10.1016/0921-4526(95)00504-8

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De Haas-van Alphen effect of CeSb in the low field phase

R Settai, H Aoki, M Takashita, T Terashima, Y Haga, T Suzuki, Y Onuki, T Goto

PHYSICA B 216 ( 3-4 ) 310 - 312 1996年1月

記述言語：英語出版者・発行元：ELSEVIER SCIENCE BV

We have done de Haas-van Alphen (dHvA) experiments in the AFF2 (up arrow up arrow down arrow down arrow up arrow up arrow down arrow) phase of CeSb. Five kinds of dHvA branches are observed, which have been discussed on the basis of the Fermi surface of LaSb.

DOI： 10.1016/0921-4526(95)00502-1

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強相関伝導系のドハース・ファンアルフェン効果による研究 (文部省S)

大貫惇睦, 摂待力生, 稲田佳彦, 杉山清寛

強相関伝導系の物理平成7年度 No.06244102 1996年

Transport Properties in LaAg and CeAg Single Crystals

Sato Hideyuki, Sugawara Hitoshi, Aoki Yuji, Motoki Kazuyuki, Settai Rikio, Ōnuki Yoshichika

Journal of the Physical Society of Japan 65, 1329-1333/, ( 5 ) 1329 - 1333 1996年

記述言語：英語出版者・発行元：一般社団法人日本物理学会

We have measured the Hall effect, magnetoresistance, thermoelectric power, magnetic susceptibility and magnetization in CeAg and LaAg single crystals. We observed clear anomalies related with a ferromagnetic transition at 5.5 K and a quadrupolar ordering at 17 K both in the Hall effect and magnetic susceptibility for CeAg.

DOI： 10.1143/JPSJ.65.1329

CiNii Article

CiNii Books

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RCu2の四重極子相互作用に基づくメタ磁性

杉山清寛, 摂待力生, 吉田良行

大阪大学極限科学研究センタ-報告書 ( 1 ) 109 - 113 1996年

High-Field Magnetization and Phase Diagram of NdCu2 Single Crystal

Sugiyama K., Settai R., Azuma H.

大阪大学極限科学研究センタ-報告書 ( 1 ) 332 - 334 1996年

Superconducting properties of CeRu2 single crystal

H Sugawara, H Sato, T Yamazaki, N Kimura, R Settai, Y Onuki

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 64 ( 12 ) 4849 - 4855 1995年12月

記述言語：英語出版者・発行元：PHYSICAL SOC JAPAN

We have grown single crystals of superconductor CeRu2 by a zone melting method, on which we have measured the lower and upper superconducting critical fields. They are estimated as 250-400 Oe and 74 kOe at 0 K, respectively. The upper critical field H-c2 is slightly anisotropic, 64.8 kOe for the field along the [100] direction and 65.6 kOe for [110] at 1.5 K. We have also observed a characteristic feature in the superconducting mixed state.

DOI： 10.1143/JPSJ.64.4849

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Magnetic and electrical properties of NdCu2

H Sugawara, P Svoboda, Y Aoki, H Sato, R Settai, Y Onuki, K Sugiyama, S Takayanagi

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN 64 ( 12 ) 4889 - 4895 1995年12月

記述言語：英語出版者・発行元：PHYSICAL SOC JAPAN

We have measured the electrical resistivity, specific heat, magnetic susceptibility, magnetization, magnetoresistance and de Haas-van Alphen effect to clarify the magnetic and elecrtical properties of NdCu2. The magnetic phase diagram is presented for the field along the b-axis, which consists of five or more magnetic phases. The Fermi surface of NdCu2 is not similar to that of YCu2 nor to that of CeCu2. Cyclotron masses of NdCu2 range from 0.4 to 1.5 m(0), which are larger than 0.1-0.7 m(0) in YCu2, but smaller than 0.5-5.3 m(0) in CeCu2.

DOI： 10.1143/JPSJ.64.4889

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ANISOTROPIC MAGNETIC AND TRANSPORT-PROPERTIES OF NDCU2

Y AOKI, H SATO, H SUGAWARA, P SVOBODA, R SETTAI, Y ONUKI

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 150 ( 2 ) 151 - 156 1995年10月

記述言語：英語出版者・発行元：ELSEVIER SCIENCE BV

We have measured the magnetization, magnetic susceptibility, magnetoresistance, Hall effect and magnetocaloric effect on a NdCu2 single crystal. The anisotropy of the magnetic properties is explained by the crystal field effect. For the field along the b-axis, three metamagnetic transitions were clearly observed in the magnetization, magnetocaloric effect and transport properties. The origin of these anomalies in the transport properties at the metamagnetic transitions is discussed in terms of the magnetocaloric effect.

DOI： 10.1016/0304-8853(95)00277-4

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希土類超伝導化合物CeRu_2の単結晶育成と物性

辺土正人, 木村憲彰, 山本悦嗣, 芳賀芳範, 稲田佳彦, 摂待力生, 大貫惇睦, 菅原仁, 佐藤英行

日本物理学会講演概要集. 秋の分科会 1995 ( 3 ) 217 - 217 1995年9月