Phase separation in Nd1-xSrxCoO3 using Co-59 NMR
文献类型：期刊论文
| 作者 | Ghoshray, A ; Bandyopadhyay, B ; Ghoshray, K ; Morchshakov, V ; Barner, K ; Troyanchuk, IO ; Nakamura, H ; Kohara, T ; Liu, GY ; Rao, GH |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2004 |
| 卷号 | 69期号:6 |
| 关键词 | NUCLEAR MAGNETIC RESONANCE LOCAL LATTICE DISTORTION SPIN-STATE TRANSITION RCOO3 R RARE-EARTH LACOO3 LA ND PEROVSKITES SYSTEM |
| ISSN号 | 1098-0121 |
| 通讯作者 | Ghoshray, A (reprint author), Saha Inst Nucl Phys, Expt Condensed Matter Phys Div, 1-AF Bidhannagar, Calcutta 700064, W Bengal, India. |
| 中文摘要 | Co-59 nuclear magnetic resonance (NMR) studies have been made to clarify the spin-state and local magnetic properties of Nd1-xSrxCoO3 (0less than or equal toxless than or equal to0.5). Three different types of Co NMR spectra are obtained. The parent NdCoO3 exhibits only one type of a resonance line associated with the low spin state of Co3+ ion. The temperature dependence of spectra indicates gradual transition from low spin (T=0 K) to intermediate spin state. A similar feature has been observed in sample with x=0.05. In the range 0.1less than or equal toxless than or equal to0.2, the spectra consist of two components of resonance lines. The first component is similar to that obtained in NdCoO3, while the second one (much weaker) has been attributed to Co3+ ions (also having low spin) surrounded by few Co4+ ions among its LS/IS Co3+ neighbors. For the samples 0.3less than or equal toxless than or equal to0.5, only the signal of the second type is observed; the first type becomes too broadened to be detected. This signal remains almost unchanged down to 1.5 K, as has been observed in Nd0.7Sr0.3CoO3. Also in the above sample, a very broad signal from Co ions with average internal field of 13 T appears at 1.5 K. This signal is ascribed to the ferromagnetic metalliclike parts of the sample. These data are consistent with the possible phase separation scenario in doped cobaltites. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/50798]  |
| 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 | Ghoshray, A,Bandyopadhyay, B,Ghoshray, K,et al. Phase separation in Nd1-xSrxCoO3 using Co-59 NMR[J]. PHYSICAL REVIEW B,2004,69(6). |
| APA | Ghoshray, A.,Bandyopadhyay, B.,Ghoshray, K.,Morchshakov, V.,Barner, K.,...&Rao, GH.(2004).Phase separation in Nd1-xSrxCoO3 using Co-59 NMR.PHYSICAL REVIEW B,69(6). |
| MLA | Ghoshray, A,et al."Phase separation in Nd1-xSrxCoO3 using Co-59 NMR".PHYSICAL REVIEW B 69.6(2004). |
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来源：物理研究所
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