| Preparation and Magnetic Properties of (La1−xSr1+x)(Mn0.5Co0.5)O4 | |
|---|---|
| 學年 | 98 |
| 學期 | 2 |
| 出版（發表）日期 | 2010-07-01 |
| 作品名稱 | Preparation and Magnetic Properties of (La1−xSr1+x)(Mn0.5Co0.5)O4 |
| 作品名稱（其他語言） | |
| 著者 | Lin, M. Y.; Wang, Y. F.; Ling, D. C.; Sheu, H. S.; Kao, H.C.I. |
| 單位 | 淡江大學化學學系 |
| 出版者 | New York: Springer New York LLC |
| 著錄名稱、卷期、頁數 | Journal of Superconductivity and Novel Magnetism 23(5), pp.721-724 |
| 摘要 | A series of single phase (La1−x Sr1+x ) (Mn0.5Co0.5)O4 (0≤x≤0.40) materials with a tetragonal K2NiF4 structure was prepared by a solid state reaction method at 1400 or 1450 °C with a short period of heating time. Powder X-ray diffraction (XRD) and the Rietveld refinement method were employed for the structural analysis. Unit cell a- and c-axes decrease with increasing amount of Sr substitution. A discrepancy between the zero-field-cooled and the field-cooled magnetization is observed in all samples investigated below a characteristic temperature, T *, which likely arises from the canted nature of spins or the random freezing of spins. It appears that T * decreases with increasing amount of Sr substitution, which is possibly due to the enhancement of chemical pressure induced by Sr and a corresponding increases of the valence of Mn and/or Co. |
| 關鍵字 | (La1−x Sr1+x )(Mn0.5Co0.5)O4;K2NiF4;Unit cell parameters;Paramagnetic;Ferromagnetic |
| 語言 | en |
| ISSN | 1557-1939; 1557-1947 |
| 期刊性質 | 國外 |
| 收錄於 | SCI EI |
| 產學合作 | |
| 通訊作者 | Kao, H.C.I. |
| 審稿制度 | |
| 國別 | USA |
| 公開徵稿 | |
| 出版型式 | 紙本 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/61685 ) |
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