期刊論文
| 學年 | 105 |
|---|---|
| 學期 | 2 |
| 出版（發表）日期 | 2017-03-01 |
| 作品名稱 | Magnetic ordering and dielectric relaxation in the double perovskite YBaCuFeO5 |
| 作品名稱（其他語言） | |
| 著者 | Yen-Chung Lai; Chao-Hung Du; Chun-Hao Lai; Yu-Hui Liang; Chin-Wei Wang; Kirrily C Rule; Hung-Cheng Wu; Hung-Duen Yang; Wei-Tin Chen; G J Shu |
| 單位 | |
| 出版者 | |
| 著錄名稱、卷期、頁數 | Journal of Physics: Condensed Matter 29(14), 145801(8 pages) |
| 摘要 | Using magnetization, dielectric constant, and neutron diffraction measurements on a high quality single crystal of YBaCuFeO5 (YBCFO), we demonstrate that the crystal shows two antiferromagnetic transitions at ${{T}_{N1}}\sim 475$ K and ${{T}_{N2}}\sim 175$ K, and displays a giant dielectric constant with a characteristic of the dielectric relaxation at T N2. It does not show the evidence of the electric polarization for the crystal used for this study. The transition at T N1 corresponds with a paramagnetic to antiferromagnetic transition with a magnetic propagation vector doubling the unit cell along three crystallographic axes. Upon cooling, at T N2, the commensurate spin ordering transforms to a spiral magnetic structure with a propagation vector of ($\frac{h}{2}$ $\frac{k}{2}$ $\frac{l}{2}\pm \delta $ ), where $h$ , $k$ , and $l$ are odd, and the incommensurability δ is temperature dependent. Around the transition boundary at T N2, both commensurate and incommensurate spin ordering coexist. |
| 關鍵字 | multiferroics;magnetic phase transition;ferroelectric relaxation |
| 語言 | en |
| ISSN | 1361-648X |
| 期刊性質 | 國外 |
| 收錄於 | SCI |
| 產學合作 | 國內 國外 |
| 通訊作者 | Chao-Hung Du |
| 審稿制度 | 是 |
| 國別 | GBR |
| 公開徵稿 | |
| 出版型式 | ,電子版 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/110121 ) |