Anisotropic magnetic coupling with a two-dimensional characteristic in noncentrosymmetric Cr11Ge19
In this work, we successfully synthesize the single crystal Cr11Ge19. The magnetism of the noncentrosymmetric Cr11Ge19 with itinerant ferromagnetic ground state is thoroughly investigated on the single crystal. Based on the variation measurements including the angular rotation, temperature, and magn...
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Online |
| Language: | English |
| Published: |
Nature Publishing Group
2016
|
| Online Access: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5171854/ |
| id |
pubmed-5171854 |
|---|---|
| recordtype |
oai_dc |
| spelling |
pubmed-51718542016-12-28 Anisotropic magnetic coupling with a two-dimensional characteristic in noncentrosymmetric Cr11Ge19 Han, Hui Zhang, Lei Zhu, Xiangde Du, Haifeng Ge, Min Ling, Langsheng Pi, Li Zhang, Changjin Zhang, Yuheng Article In this work, we successfully synthesize the single crystal Cr11Ge19. The magnetism of the noncentrosymmetric Cr11Ge19 with itinerant ferromagnetic ground state is thoroughly investigated on the single crystal. Based on the variation measurements including the angular rotation, temperature, and magnetic field dependence of magnetization, we find that this material exhibits strong magnetic anisotropy along the c-axis. To clearly reveal the magnetic interactions, the critical behavior is studied using the modified Arrott plot, the Kouvel-Fisher method, and the critical isotherm technique. Combining these different methods, three main critical exponents (β, γ, and δ) are obtained. The critical exponent β is close to the theoretical prediction of a three-dimensional XY model with spin-dimensionality n = 2, indicating two-dimensional magnetic coupling. Meanwhile, the critical exponent γ suggests that the magnetic interaction is of long-range type with magnetic exchange distance decaying as J(r) ≈ r−4.61. We propose that the ferromagnetic ground state of Cr11Ge19 is formed by the polarized magnetic moments along the c-axis, while the long-range magnetic coupling is established within the ab plane. Nature Publishing Group 2016-12-20 /pmc/articles/PMC5171854/ /pubmed/27996053 http://dx.doi.org/10.1038/srep39338 Text en Copyright © 2016, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
| repository_type |
Open Access Journal |
| institution_category |
Foreign Institution |
| institution |
US National Center for Biotechnology Information |
| building |
NCBI PubMed |
| collection |
Online Access |
| language |
English |
| format |
Online |
| author |
Han, Hui Zhang, Lei Zhu, Xiangde Du, Haifeng Ge, Min Ling, Langsheng Pi, Li Zhang, Changjin Zhang, Yuheng |
| spellingShingle |
Han, Hui Zhang, Lei Zhu, Xiangde Du, Haifeng Ge, Min Ling, Langsheng Pi, Li Zhang, Changjin Zhang, Yuheng Anisotropic magnetic coupling with a two-dimensional characteristic in noncentrosymmetric Cr11Ge19 |
| author_facet |
Han, Hui Zhang, Lei Zhu, Xiangde Du, Haifeng Ge, Min Ling, Langsheng Pi, Li Zhang, Changjin Zhang, Yuheng |
| author_sort |
Han, Hui |
| title |
Anisotropic magnetic coupling with a two-dimensional characteristic in noncentrosymmetric Cr11Ge19 |
| title_short |
Anisotropic magnetic coupling with a two-dimensional characteristic in noncentrosymmetric Cr11Ge19 |
| title_full |
Anisotropic magnetic coupling with a two-dimensional characteristic in noncentrosymmetric Cr11Ge19 |
| title_fullStr |
Anisotropic magnetic coupling with a two-dimensional characteristic in noncentrosymmetric Cr11Ge19 |
| title_full_unstemmed |
Anisotropic magnetic coupling with a two-dimensional characteristic in noncentrosymmetric Cr11Ge19 |
| title_sort |
anisotropic magnetic coupling with a two-dimensional characteristic in noncentrosymmetric cr11ge19 |
| description |
In this work, we successfully synthesize the single crystal Cr11Ge19. The magnetism of the noncentrosymmetric Cr11Ge19 with itinerant ferromagnetic ground state is thoroughly investigated on the single crystal. Based on the variation measurements including the angular rotation, temperature, and magnetic field dependence of magnetization, we find that this material exhibits strong magnetic anisotropy along the c-axis. To clearly reveal the magnetic interactions, the critical behavior is studied using the modified Arrott plot, the Kouvel-Fisher method, and the critical isotherm technique. Combining these different methods, three main critical exponents (β, γ, and δ) are obtained. The critical exponent β is close to the theoretical prediction of a three-dimensional XY model with spin-dimensionality n = 2, indicating two-dimensional magnetic coupling. Meanwhile, the critical exponent γ suggests that the magnetic interaction is of long-range type with magnetic exchange distance decaying as J(r) ≈ r−4.61. We propose that the ferromagnetic ground state of Cr11Ge19 is formed by the polarized magnetic moments along the c-axis, while the long-range magnetic coupling is established within the ab plane. |
| publisher |
Nature Publishing Group |
| publishDate |
2016 |
| url |
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5171854/ |
| _version_ |
1613802463461113856 |