Neutron diffraction studies under pressure of the field-induced ferromagnetic metallic state in (La0.4Pr0.6)(1.2)Sr1.8Mn2O7: Role of super and double exchange
文献类型：期刊论文
| 作者 | Gukasov, A ; Wang, FW ; Anighoefer, B ; He, LH ; Suryanarayanan, R ; Revcolevschi, A |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2005 |
| 卷号 | 72期号:9 |
| 关键词 | MAGNETORESISTANCE MANGANITE LA2-2XSR1+2XMN2O7 LAYERED PEROVSKITE STRUCTURE COLOSSAL MAGNETORESISTANCE TRANSITION SPIN CRYSTAL |
| ISSN号 | 1098-0121 |
| 通讯作者 | Gukasov, A (reprint author), CEA, CNRS, Leon Brillouin Lab, F-91191 Gif Sur Yvette, France. |
| 中文摘要 | We have used a combination of pressure and magnetic field to investigate the field-induced ferromagnetic metallic state in a single crystal of the bilayer manganite (La0.4Pr0.6)(1.2)Sr1.8Mn2O7 . We demonstrate that while the external hydrostatic pressure weakens the superexchange interaction between the adjacent bilayers, it strengthens the double exchange interaction in the bilayers. This strengthening leads to a decrease of the critical field that is needed to induce the ferromagnetic transition and further results in an increase in the Curie temperature. The weakened superexchange, on the other hand, is the cause of a less stable ferromagnetic state with a reduction in the critical parameter beta. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/49812]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Gukasov, A,Wang, FW,Anighoefer, B,et al. Neutron diffraction studies under pressure of the field-induced ferromagnetic metallic state in (La0.4Pr0.6)(1.2)Sr1.8Mn2O7: Role of super and double exchange[J]. PHYSICAL REVIEW B,2005,72(9). |
| APA | Gukasov, A,Wang, FW,Anighoefer, B,He, LH,Suryanarayanan, R,&Revcolevschi, A.(2005).Neutron diffraction studies under pressure of the field-induced ferromagnetic metallic state in (La0.4Pr0.6)(1.2)Sr1.8Mn2O7: Role of super and double exchange.PHYSICAL REVIEW B,72(9). |
| MLA | Gukasov, A,et al."Neutron diffraction studies under pressure of the field-induced ferromagnetic metallic state in (La0.4Pr0.6)(1.2)Sr1.8Mn2O7: Role of super and double exchange".PHYSICAL REVIEW B 72.9(2005). |
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来源：物理研究所
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