2010 Fiscal Year Final Research Report
STEPLIKE TRANSITION AND ORBITAL FRUSTRATION IN MANGANESE OXIDES
| Project/Area Number |
20540340
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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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 | Iwate University |
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Principal Investigator |
MATSUKAWA Michiaki Iwate University, 工学部, 教授 (40221585)
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| Co-Investigator(Kenkyū-buntansha) |
YOSHIMOTO Noriyuki 岩手大学, 工学研究科, 教授 (80250637)
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| Co-Investigator(Renkei-kenkyūsha) |
NAKANISHI Yoshiki 岩手大学, 工学研究科, 准教授 (70322964)
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| Project Period (FY) |
2008 – 2010
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| Keywords | 強相関系 / マンガン酸化物 / 超巨大磁気抵抗効果 / 圧力効果 |
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| Research Abstract |
We have demonstrated the effect of pressure on the magnetization step and its associated magnetostriction in the bilayered and cubic manganites. These findings strongly suggest a crucial role of the frozen phase separated state in the field induced step like transition. A colossal electro resistance effect in the bilayered manganite is also observed at lower temperatures. Furthermore, anomalously negative magnetization of Sb substituted electron doped manganites is reported.
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