| Project/Area Number |
22245009
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (A)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Inorganic chemistry
|
|---|
| Research Institution | Kyoto University |
|---|
Principal Investigator |
KAGEYMA Hiroshi 京都大学, 大学院・工学研究科, 教授 (40302640)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
TAKANO Mikio 京都大学, 物質-細胞統合システム拠点, 教授 (70068138)
KAWAKAMI Takateru 日本大学, 理工学部, 講師 (20366561)
HAYASHI Naoaki 京都大学, 学際融合教育研究推進センター, 特定業務専門職員 (70346047)
OKADA Taku 東京大学, 物性研究所, 助教 (90343938)
GANESANPOTTI Subodh 京都大学, 工学研究科, 外国人特別研究員
|
|---|
| Project Period (FY) |
2010 – 2012
|
| Project Status |
Completed (Fiscal Year 2012)
|
| Budget Amount *help |
¥47,840,000 (Direct Cost: ¥36,800,000、Indirect Cost: ¥11,040,000)
Fiscal Year 2012: ¥9,750,000 (Direct Cost: ¥7,500,000、Indirect Cost: ¥2,250,000)
Fiscal Year 2011: ¥18,330,000 (Direct Cost: ¥14,100,000、Indirect Cost: ¥4,230,000)
Fiscal Year 2010: ¥19,760,000 (Direct Cost: ¥15,200,000、Indirect Cost: ¥4,560,000)
|
|---|
| Keywords | スピン転移 / 平面四配位鉄 / 高圧 X 線回折 / 高圧メスバウアー / 平面四配位 / 鉄酸化物 / 高圧 / 強磁性 / 酸化物 / 磁性 / 超伝導 / 鉄 / 高圧X線回折 |
|---|
| Research Abstract |
We have obtained novel square planar iron oxides by Mn, Co, Lanthanoides substitution of SrFeO2. We have revealed origin of the pressure-induced spin transition (S = 2 to 1) in square planar iron oxides, and observed further pressure-induced spin transition (S = 1 to 0) in SrFeO2. Moreover, we have revealed that Eu substitution of SrFeO2 significantly decreases the spin transition pressure. We synthesized a new cubic Fe 4+ perovskite BaFeO3, and revealed that BaFeO3 is the first reported Fe oxide that shows ferromagnetism at ambient pressure
|
