Magnetic structure of the noncentrosymmetric magnet Sr2MnSi2O7 through irreducible representation and magnetic space group analyses
| Autor: | Nambu, Y., Kawamata, M., Pang, X., Murakawa, H., Avdeev, M., Kimura, H., Masuda, H., Hanasaki, N., Onose, Y. |
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| Rok vydání: | 2024 |
| Předmět: | |
| Zdroj: | Acta Cryst. B 80, 393-400 (2024). [Focused Issue on Magnetic Structures] |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1107/S2052520624007625 |
| Popis: | Magnetic structures of the noncentrosymmetric magnet Sr$_2$MnSi$_2$O$_7$ were examined through neutron diffraction for powder and single-crystalline samples, as well as magnetometry measurements. All allowed magnetic structures under the space group $P\bar{4}2_1 m$ with the magnetic wavevector $\vec{q}_{\rm m}=(0,0,1/2)$~r.l.u., were analysed via irreducible representation and magnetic space group approaches. The compound is refined to have in-plane magnetic moments within the magnetic space group $Cmc2_1.1^{\prime}_c$ (\#36.177) under zero field, which can be altered to $P2_1 2_1 2_1.1^{\prime}_c$ (\#19.28) above $\mu_0 H=0.067(5)$~T to align induced weak-ferromagnetic components within one layer on the $ab$-plane. All refined parameters are provided following the recent framework based upon the magnetic space group, which better conveys when exchanging crystallographic information for commensurate magnetic structures. Comment: 7 pages, 4 figures |
| Databáze: | arXiv |
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