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Competition between helimagnetic and ferroquadrupolar orderings in a monoaxial chiral magnet DyNi3Ga9 studied by resonant x-ray diffraction
https://repo.qst.go.jp/records/84917
https://repo.qst.go.jp/records/84917d01b1e76-0736-4039-8eab-0ab233a09a44
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2021-11-01 | |||||
| タイトル | ||||||
| タイトル | Competition between helimagnetic and ferroquadrupolar orderings in a monoaxial chiral magnet DyNi3Ga9 studied by resonant x-ray diffraction | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Tsukagoshi, M.
× Tsukagoshi, M.× Matsumura, T.× Michimura, S.× Inami, Toshiya× Ohara, S.× Toshiya, Inami |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Successive phase transitions in a rare-earth monoaxial chiral magnet DyNi 3 Ga9 have been investigated by resonant x-ray diffraction. Magnetic dipole and electric quadrupole degrees of freedom arising from the large angular moment of J = 15/2, in combination with the symmetric and antisymmetric exchange interactions and the crystal field anisotropy, give rise to competing ordered phases. We show that the antiferromagnetically coupled Dy moments in the c-plane form an incommensurate helimagnetic order with q ∼ (0, 0, 0.43) just below TN = 10 K, which further exhibits successive first-order transitions to the commensurate helimagnetic order with q = (0, 0, 0.5) at TN′ = 9 K, and to the canted antiferromagnetic order with q = (0, 0, 0) at TN′′ = 8.5 K. The relation of the magnetic helicity and the crystal chirality in DyNi3 Ga9 is also uniquely determined. Splitting of the (6, 0, 0) Bragg peak is observed below TN′′ , reflecting the lattice distortion due to the ferroquadrupole order. In the canted antiferromagnetic phase, a spin-flop transition takes place at 5 K when the temperature is swept in a weak magnetic field. We discuss these transitions from the viewpoint of competing energies described above. | |||||
| 書誌情報 |
Physical Review B 巻 105, 号 1, p. 014428-1-014428-12, 発行日 2021-11 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 2469-9950 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1103/PhysRevB.105.014428 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://journals.aps.org/prb/abstract/10.1103/PhysRevB.105.014428 | |||||
