| ชื่อเรื่อง | : | Critical behavior and the absence of glass state in ferromagnetic La0.7Ca0.3CoO3 nanowires |
| นักวิจัย | : | Wang, Yang , Fan, Hong Jin |
| คำค้น | : | - |
| หน่วยงาน | : | Nanyang Technological University, Singapore |
| ผู้ร่วมงาน | : | - |
| ปีพิมพ์ | : | 2554 |
| อ้างอิง | : | Wang, Y., & Fan, H. J. (2012). Critical behavior and the absence of glass state in ferromagnetic La0.7Ca0.3CoO3 nanowires. Acta Materialia, 60(3), 1238-1245. , 1359-6454 , http://hdl.handle.net/10220/10366 , http://dx.doi.org/10.1016/j.actamat.2011.11.036 |
| ที่มา | : | - |
| ความเชี่ยวชาญ | : | - |
| ความสัมพันธ์ | : | Acta materialia |
| ขอบเขตของเนื้อหา | : | - |
| บทคัดย่อ/คำอธิบาย | : | We report a systematic study of the magnetic and thermodynamic properties of uniform La0.7Ca0.3CoO3 nanowires prepared by a hydrothermal method, and compare them with the bulk counterpart. The nanowires, ∼59 nm in diameter, are single crystalline as revealed by electron microscopy. With decreasing temperature, the bulk La0.7Ca0.3CoO3 shows a ferromagnetism followed by a reentrant glass state, whereas the nanowires show only a purely ferromagnetic ground state. The thermopower and specific heat results indicate that there exist enhanced spin and/or orbital fluctuations in the nanowires that could be responsible for the absence of the glass state. Critical behavior analysis shows that the nanowires fall into a three-dimensional Heisenberg ferromagnet class. |
| บรรณานุกรม | : |
Wang, Yang , Fan, Hong Jin . (2554). Critical behavior and the absence of glass state in ferromagnetic La0.7Ca0.3CoO3 nanowires.
กรุงเทพมหานคร : Nanyang Technological University, Singapore. Wang, Yang , Fan, Hong Jin . 2554. "Critical behavior and the absence of glass state in ferromagnetic La0.7Ca0.3CoO3 nanowires".
กรุงเทพมหานคร : Nanyang Technological University, Singapore. Wang, Yang , Fan, Hong Jin . "Critical behavior and the absence of glass state in ferromagnetic La0.7Ca0.3CoO3 nanowires."
กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2554. Print. Wang, Yang , Fan, Hong Jin . Critical behavior and the absence of glass state in ferromagnetic La0.7Ca0.3CoO3 nanowires. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2554.
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