Spin-wave theory of the nearly two-dimensional ferromagnet (C3H7NH3)2CuCl4 |
| |
| Affiliation: | 1. Department of Chemical Engineering, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139, United States;1. School of Materials Science and Engineering, Tianjin Key Lab for Photoelectric Materials and Devices, Key Laboratory of Display Materials and Photoelectric Devices (Ministry of Education), National Demonstration Center for Experimental Function Materials Education, Tianjin University of Technology, Tianjin 300384, China;2. Department of Environmental Science and Engineering, Nankai University Binhai College, Tianjin 300270, China;1. Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Guangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional Films, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China;2. School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China;3. Guangdong Provincial Key Laboratory of Optical Chemicals, XinHuaYue Group, Maoming 525000, China;1. State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, PR China;2. College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, PR China;3. School of Environmental and Materials Engineering, Yantai University, Yantai, 264005, PR China |
| |
| Abstract: | A renormalized spin-wave theory is developed for the layer-type ferromagnet (C3H7NH3)2CuCl4. In contrast with the case of K2CuF4, the main perturbation to the isotropic intralayer exchange interaction leading to three-dimensional long-range order is here the anisotropy in the intraplanar interaction. An analytical expression for the magnetization of the two-dimensional Heisenberg ferromagnet with a weak anisotropy in the intraplanar exchange as well as interplanar interactions has been obtained. It is shown that an excellent agreement between theory and experiment can be obtained using the interaction constants estimated in previous investigations, and further that the spin-wave interactions have a significant effect on the temperature dependence of the magnetization. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
