| Project/Area Number |
22560015
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Applied materials science/Crystal engineering
|
|---|
| Research Institution | National Institute for Materials Science |
|---|
Principal Investigator |
MOCHIKU Takashi 独立行政法人物質・材料研究機構, 超伝導物性ユニット, 主幹研究員 (20354293)
|
|---|
| Project Period (FY) |
2010 – 2012
|
| Project Status |
Completed (Fiscal Year 2012)
|
| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2011: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2010: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
|
|---|
| Keywords | 超伝導体 / 酸化物高温超伝導体 / 磁性超伝導体 / 中性子回折 / 秩序配列 / 磁気秩序 |
|---|
| Research Abstract |
High-Tc superconductors have the crystal structure with the stacking of the superconducting CuO2 plane and the insulating plane. The FeSr2YCu2O6+? compound with the Fe-substituted insulating plane exhibits superconductivity and antiferromagnetic order, only after N2-annealing for preventing the disorder of Cu and Fe, and subsequent O2-annealing. While the FeO? insulating plane does not exhibit long-range antiferromagnetic order because of the substitution of 10% Cu, the oxygen atoms around Cu substituted on the FeO? insulating plane supply the carrier onto the superconducting CuO2 plane. The critical current density of the FeSr_ 2YCu_ 2O_ 6+χcompound is lower than that of other high-Tc superconductors due to the magnetic order of the FeO? insulating plane, and the inter-grain critical current density is much lower.
|
