Internal friction evidence of the intrinsic inhomogeneity in La0.67Ca0.33MnO3 at low temperatures
文献类型：期刊论文
| 作者 | Ma, YQ ; Song, WH ; Zhang, RL ; Dai, JM ; Yang, J ; Du, JJ ; Sun, YP ; Bi, CZ ; Ge, YJ ; Qiu, XG |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2004 |
| 卷号 | 69期号:13 |
| 关键词 | METAL-INSULATOR-TRANSITION PHASE-SEPARATION CHARGE LOCALIZATION DOPED MANGANITES DOUBLE EXCHANGE YOUNGS MODULUS LA1-XCAXMNO3 MAGNETORESISTANCE DISTORTIONS |
| ISSN号 | 1098-0121 |
| 通讯作者 | Sun, YP: Chinese Acad Sci, Inst Solid State Phys, Key Lab Internal Frict & Defects Solids, Hefei 230031, Peoples R China. |
| 中文摘要 | The ferromagnetic manganite La0.67Ca0.33MnO3 is systematically investigated below Curie temperature T-C by measurements of internal friction Q(-1)(T), Young's modulus E(T), resistivity rho(T), and magnetization M(T). Accompanying single metal-insulator transition at T-p and single paramagnetic-ferromagnetic (PM-FM) transition, three peaks at temperatures 260, 222, and 105 K are observed in the spectra of internal friction Q(-1)(T), respectively. The two peaks at 260 and 105 K are of the characteristic of the phase transition, which are related to the magnetic transition from a PM disorder state to a FM order state and to the intrinsic inhomogeneity due to the electronic phase separation, respectively. The broad peak around 222 K is actually composed of two subpeaks located at 222 and 234 K, respectively. This broad peak is of the characteristic of relaxation originating from the thermally activated motion of insulating and conduction domains. The activation energy and the relaxation time at infinite temperature are determined as 0.32 eV, 2.0x10(-12) s for the 222-K subpeak and 0.38 eV, 2.5x10(-13) s for the 234-K subpeak, respectively. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-18 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/40177]  |
| 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 | Ma, YQ,Song, WH,Zhang, RL,et al. Internal friction evidence of the intrinsic inhomogeneity in La0.67Ca0.33MnO3 at low temperatures[J]. PHYSICAL REVIEW B,2004,69(13). |
| APA | Ma, YQ.,Song, WH.,Zhang, RL.,Dai, JM.,Yang, J.,...&Qiu, XG.(2004).Internal friction evidence of the intrinsic inhomogeneity in La0.67Ca0.33MnO3 at low temperatures.PHYSICAL REVIEW B,69(13). |
| MLA | Ma, YQ,et al."Internal friction evidence of the intrinsic inhomogeneity in La0.67Ca0.33MnO3 at low temperatures".PHYSICAL REVIEW B 69.13(2004). |
入库方式： OAI收割
来源：物理研究所
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