2009 Fiscal Year Final Research Report
Study of novel quantum magnetism in new geometrically frustrated compounds of hydroxyhalides
| Project/Area Number |
19340100
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Condensed matter physics II
|
|---|
| Research Institution | Saga University |
|---|
Principal Investigator |
ZHENG Xu-guang Saga University, 理工学部, 教授 (40236063)
|
|---|
| 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)
|
|---|
| Project Period (FY) |
2007 – 2009
|
| Keywords | 新物質 / 新奇量子磁性 / 幾何学的フラストレーション |
|---|
| 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.
|
