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タイトル: | Magnetic Phases in Sr(1-x) Ca(x)Co(2)P(2) Studied by μ+ SR |
著者: | Sugiyama, Jun Nozaki, Hiroshi Harada, Masashi Umegaki, Izumi Higuchi, Yuki Miwa, Kazutoshi Imai, Masaki Michioka, Chishiro Yoshimura, Kazuyoshi Ansaldo, Eduardo J. Brewer, Jess H. Andreica, Daniel Baines, Christopher Mansson, Martin |
著者名の別形: | 道岡, 千城 吉村, 一良 |
キーワード: | muon spin rotation and relaxation cobalt phosphide antiferromagnet phase diagram |
発行日: | 2015 |
出版者: | Elsevier BV |
誌名: | Physics Procedia |
巻: | 75 |
開始ページ: | 426 |
終了ページ: | 434 |
抄録: | In order to elucidate the dependence of the magnetic ground state on the Ca content (x) in Sr1-xCaxCo2P2 (0 ≤x ≤1, ThCr2Si2-type structure), we have performed muon spin rotation− and relaxation (μ+SR) experiments on Sr1-xCax Co2P2 powder samples mainly in a zero applied field. The end member compound, SrCo2P2, is found to be paramagnetic down to 19 mK. As x increases, such a paramagnetic ground state is observed down to 1.8 K until x = 0.45. Then, as x increases further, a short-range antiferromagnetic (AF) ordered phase appears at low temperatures for 0.48 ≤ x ≤ 0.75, and finally, a long-range AF ordered phase is stabilized for x > 0.75. The internal magnetic field of the other end member compound, CaCo2P2, is well consistent with that of the A-type AF order state, which was proposed from neutron scattering experiments. The phase diagram determined with μ+SR is different from that proposed by macroscopic measurements. For an isostructural compound, LaCo2P2, static magnetic order is found to be formed below <∼ 130 K. |
記述: | 20th International Conference on Magnetism, ICM 2015 |
著作権等: | © The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license(https://creativecommons.org/licenses/by-nc-nd/4.0/) |
URI: | http://hdl.handle.net/2433/226433 |
DOI(出版社版): | 10.1016/j.phpro.2015.12.052 |
出現コレクション: | 学術雑誌掲載論文等 |
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