| Project/Area Number |
19340100
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Condensed matter physics II
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| Research Institution | Saga University |
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Principal Investigator |
ZHENG Xu-guang Saga University, 理工学部, 教授 (40236063)
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| Co-Investigator(Kenkyū-buntansha) |
真木 一 佐賀大学, 理工学部, 准教授 (10359945)
山田 浩志 独立行政法人産業技術総合研究所, 九州センター, 研究員 (90415761)
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| Project Period (FY) |
2007 – 2009
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| Project Status |
Completed (Fiscal Year 2009)
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| Budget Amount *help |
¥18,200,000 (Direct Cost: ¥14,000,000、Indirect Cost: ¥4,200,000)
Fiscal Year 2009: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2008: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2007: ¥9,620,000 (Direct Cost: ¥7,400,000、Indirect Cost: ¥2,220,000)
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| Keywords | 新物質 / 新奇量子磁性 / 幾何学的フラストレーション / 新規量子磁性 / 均一系での秩序と非秩序の共存 / 水酸塩化物 |
|---|
| Research Abstract |
In this research we identified unconventional magnetic transitions in a transition metal hydroxyhalogenide series of deformed pyrochlore compounds M_2(OH)_3X, where M represents a d-electron transition metal magnetic ion such as Cu^<+2>, Ni^<+2>, Co^<+2>, Fe^<+2>, and Mn^<+2>, and X represents halogen ions of Cl^<-1>, Br^<-1>, or I^<-1>. This material category presents a complete series for spins S=1/2 to S=5/2 (S=1/2 for Cu^<+2>, 1 for Ni<+2>, 3/2 for Co^<+2>, 2 for Fe^<+2>, and 5/2 for Mn^<+2>), therefore, we have discovered a unique materials system for the study of geometric frustration in various spin systems.
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