Collapse-like decrease of RKKY interaction and relationship between disappearence of Ni magnetic moment and Kondo effect
| Project/Area Number |
24560809
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Research Field |
Physical properties of metals
|
|---|
| Research Institution | Nihon University |
|---|
Principal Investigator |
YANO kazuo 日本大学, 理工学部, 准教授 (20256803)
|
|---|
| Co-Investigator(Renkei-kenkyūsha) |
NISHIMURA Katsuhiko 富山大学, 大学院理工学研究部, 教授 (70218189)
|
|---|
| Project Period (FY) |
2012-04-01 – 2015-03-31
|
| Project Status |
Completed (Fiscal Year 2014)
|
| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2012: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
|
|---|
| Keywords | 重い電子系 / RKKY相互作用の崩壊 / CeNi / GdNi / (Ce-Gd)Ni / 近藤効果 / 分子場近似 / RKKY相互作用 / 軟Ｘ線磁気円２色性 / 遍歴性 / 局在性 / XMCD / 強相関電子系 / Kondo 効果 / 崩壊的減少 |
|---|
| Outline of Final Research Achievements |
A group of "heavy-fermion" materials have been investigating intensively over 40 years and nowadays, it remains to be interesting and a hard nut to crack. In this study, I have aimed to get some clues to understand the electronic states in CeNi by focusing on the famous heavy-fermion compound CeNi by employing the (Ce-Gd)Ni systems combined with ferri-magnet GdNi and the CeNi.
Throug these 3 years study, I have obtained some clues for reaching to the aim. These were summarized as follows; (1)collapse-like decrease in RKKY interaction at Gd-poor region (0.15≦Gd≦0.20) can be charactic of Ce element only, (2)the RKKY interaction can be suppressed even in Gd-rich regions, (3)micro-scopic XMCD (soft X-ray magnetic circular dichorism) measeurement had it clear that the 4f electron of Ce can be affected by relatively small intensity of magnetic field (2-10 Tesla) with decreasing of Gd content from 0.8 to 0.5.
|
Report
(4 results)
Research Products
(20 results)
