Examining Magnetic Models and Anisotropies in β-Cu2V2O7 by High-Frequency ESR
| Autor: | H. S. Chen, Guang Hui Rao, Zefeng Xia, Yanhua Sun, Z. W. Ouyang, M.Y. Ruan |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Condensed matter physics
Chemistry Resonance Magnetic lattice 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Atomic and Molecular Physics and Optics law.invention Magnetization Exchange bias law 0103 physical sciences Antiferromagnetism 010306 general physics 0210 nano-technology Electron paramagnetic resonance Anisotropy Single crystal |
| Zdroj: | Applied Magnetic Resonance. 48:423-433 |
| ISSN: | 1613-7507 0937-9347 |
| Popis: | High-frequency electron spin resonance (ESR) measurements were carried out on a single crystal β-Cu2V2O7, where Cu–O edge-sharing chains are connected by non-magnetic VO4 tetrahedrons. Due to sizable anisotropies, analyses of bulk magnetic properties alone have not yielded any definite conclusion and the modeling of the magnetic lattice is controversial. By means of high-frequency ESR with operating frequencies of 135–405 GHz and at a temperature range of 4.2–50 K, the large g value anisotropy is determined, which removes the ambiguity of susceptibility fitting. Moreover, non-negligible exchange anisotropy is evaluated by analyzing high-field magnetization and antiferromagnetic resonance in antiferromagnetic state appearing below T N = 26 K. Based on these microscopic information, we found that alternating-chain model is the most reasonable candidate for explaining properties of the crystal. The present study shows the importance of combining macroscopic and microscopic probes in analyzing magnetic network of complex magnetic materials. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink