Research of High-Field Magnetization in Transuranium Neptunium Compounds
超铀镎化合物的高场磁化研究
基本信息
- 批准号:17540324
- 负责人:
- 金额:$ 2.3万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 财政年份:2005
- 资助国家:日本
- 起止时间:2005 至 2006
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
We measured high-field magnetization in NpRhGa_5 and NpO_2 and related compound, UO_2. The New transient memory equipment 'Sigma90' was introduced, which was too expensive to buy with this foundation, and developed the related measurement systems by this foundation. Then high-quality magnetization data can be obtained with this new measurement system. The magnetic phase diagram of NpRhGa_5 is obtained by the measurement of the temperature dependence of the high-field magnetization. According to this results, the large magnetic moment of about 1 μ_B/Np with magnetic anisotropy of [110] changes to the small magnetic moment of about 0.5 μ_B/Np with no magnetic anisotropy at the metamagnetic first order transition. The ground state of low temperature state is represented by the theory of Kiss and Kuramoto with the quadrupolar interaction. This means that the system can be explained by the local moment 5f-electron model. On the other hand, the de Haas-van Alphen oscillations are measured and this results shows the 5f-electron is itinerant. These results shows that the magnetism of this compound cannot be explained by the simple localized or itinerant f-electron model. The magnetization of NpO_2 shows always linear below T_N.. This result shows the antiferromagnetic interaction between 5f-electrons is very strong. These results are represented in the international conferences, SCES05 (Vienna ), Handai forum (Hanoi), ICM2006 (Kyoto) and RHMF2006 (Sendai). These results also be represented in the JPS meetings.
我们测量了NPRHGA_5和NPO_2中的高场磁化以及相关化合物UO_2。引入了新的瞬态存储设备“ Sigma90”,该基金会购买太贵了,并通过该基金会开发了相关的测量系统。然后,可以使用此新的测量系统获得高质量的磁化数据。 NPRHGA_5的磁相图是通过测量高场磁化的温度依赖性获得的。根据此结果,[110]的磁各向异性约为1μ_b/np的大磁矩将在元磁一级过渡时变成约0.5μb/np的小磁矩,而无磁各向异性。低温状态的基态由kiss和kuramoto与四极相互作用的理论表示。这意味着可以通过本地矩5电子模型来解释系统。另一方面,测量了de haas-van alphen振荡,结果表明5F电子振荡是巡回的。这些结果表明,该化合物的磁性无法通过简单的局部或巡回的F-电子模型来解释。 NPO_2的磁化始终显示在t_n下方线性。该结果表明5F电子之间的抗铁磁相互作用非常强。这些结果在国际会议,SCES05(维也纳),Handai论坛(Hanoi),ICM2006(Kyoto)和RHMF2006(Sendai)中表示。这些结果在JPS会议上也表示。
项目成果
期刊论文数量(12)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Characteristic metamagnetic transitions in NpRhGa5 and UPtGa5
NpRhGa5 和 UPtGa5 中的特征变磁转变
- DOI:10.1088/1742-6596/51/1/051
- 发表时间:2006
- 期刊:
- 影响因子:0
- 作者:K. Sugiyama;H. Nakashimaa;T. Yamada;D. Aoki;S. Ikeda;Y. Haga;E. Yamamoto;A. Nakamura;Y. Homma;Y. Shiokawa;K. Kindo;M. Hagiwara;Y. Ōnuki
- 通讯作者:Y. Ōnuki
Characteristic High-Field Magnetization in a Transuranium Antiferromagnet NpRhGa5
超铀反铁磁体 NpRhGa5 的特征高场磁化
- DOI:10.1143/jpsj.75.094707
- 发表时间:2006
- 期刊:
- 影响因子:1.7
- 作者:Sugiyama Kiyohiro;Nakashima Hiroshi;A. Dai;Haga Yoshinori;Yamamoto Etsuji;Nakamura Akio;Homma Yoshiya;S. Yoshinobu;Kindo Koichi;Hagiwara Masayuki;Ōnuki Yoshichika
- 通讯作者:Ōnuki Yoshichika
Magnetic properties of a transuranium compound NpRhGa_5
超铀化合物NpRhGa_5的磁性
- DOI:
- 发表时间:2006
- 期刊:
- 影响因子:0
- 作者:K.Sugiyama;H.Nakashima;D.Aoki;S.Ikeda;Y.Haga;E.Yamamoto;A.Nakamura;Y.Homma;Y.Shiokawa;K.Kindo;M.Hagiwara;Y.Onuki;K.Umeo;杉山清寛;H.Kubo;Winfried Koller;K.Umeo;杉山清寛
- 通讯作者:杉山清寛
High-field magnetization in transuranium compound
超铀化合物的高场磁化
- DOI:
- 发表时间:2007
- 期刊:
- 影响因子:0
- 作者:久保健;田中秀数;S. Niitaka;T. Nakano;F. Iga;S. Kimura;M. Hagiwara;S. Yoshii;N. D. Dung;N. V. Hieu;宮下精二;K. Sugiyama
- 通讯作者:K. Sugiyama
High-field magnetization of NpRhGa5
NpRhGa5 的高场磁化
- DOI:10.1016/j.physb.2006.01.542
- 发表时间:2006
- 期刊:
- 影响因子:2.8
- 作者:K. Sugiyama;D. Honda;H. Nakashima;D. Aoki;E. Yamamoto;A. Nakamura;K. Honma;Y. Shiokawa;K. Kindo;M. Hagiwara;Y. Ōnuki
- 通讯作者:Y. Ōnuki
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SUGIYAMA Kiyohiro其他文献
SUGIYAMA Kiyohiro的其他文献
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{{ truncateString('SUGIYAMA Kiyohiro', 18)}}的其他基金
High-Field Magnetism on Uranium and Trans-uranium compounds
铀和跨铀化合物的强磁场
- 批准号:
19540366 - 财政年份:2007
- 资助金额:
$ 2.3万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Study of Metamagnetism Based on Quadrupole Moment in High Magnetic Field
基于强磁场四极矩的超磁性研究
- 批准号:
09640432 - 财政年份:1997
- 资助金额:
$ 2.3万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
High field magnetism of the high-T_c superconducting materials and related materials.
高T_c超导材料及相关材料的高场磁性。
- 批准号:
02640257 - 财政年份:1990
- 资助金额:
$ 2.3万 - 项目类别:
Grant-in-Aid for General Scientific Research (C)
相似海外基金
Physical Properties of Transuranium Compounds
超铀化合物的物理性质
- 批准号:
01044012 - 财政年份:1989
- 资助金额:
$ 2.3万 - 项目类别:
Grant-in-Aid for international Scientific Research