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Crystal structures and magnetic properties of lanthanide containing borates LnM(BO3)(2) (Ln=Y, Ho-Lu, M=Sc, Cr)
| Title: | Crystal structures and magnetic properties of lanthanide containing borates LnM(BO3)(2) (Ln=Y, Ho-Lu, M=Sc, Cr) |
| Authors: | Doi, Yoshihiro Browse this author →KAKEN DB | | Satou, Tatsuya Browse this author | | Hinatsu, Yukio Browse this author →KAKEN DB |
| Keywords: | Borate | | Dolomite-type structure | | Calcite-type structure | | Magnetic properties | | Antiferromagnetism | | Specific heat |
| Issue Date: | Oct-2013 |
| Publisher: | Academic press inc elsevier science |
| Journal Title: | Journal of solid state chemistry |
| Volume: | 206 |
| Start Page: | 151 |
| End Page: | 157 |
| Publisher DOI: | 10.1016/j.jssc.2013.08.015 |
| Abstract: | The synthesis, crystal structures and magnetic properties of LnM(BO3)(2) (Ln=Y, Ho Lu; M=Sc, Cr) were investigated. The LnCr(BO3)(2) compounds crystallize in the dolomite-type structure with space group R (3) over bar, in which the Ln and Cr ions occupy two octahedral sites. From the result of structural analysis, it was found that there is an anti-site disorder between these two sites and its chemical formula is more exactly Ln(1-r)Cr(r)[Cr(1-r)Ln(r)](BO3)(2). On the other hand, the LnSc(BO3)(2) adopt the calcite-type structure with space group R (3) over barc. The Ln and Sc ions randomly occupy an octahedral site and the chemical formula is represented as (Ln(0.5)Sc(0.5))BO3. From the magnetic susceptibility and specific heat measurements, we found that all the LnCr(BO3)(2) show an antiferromagnetic transition at 6.1-8.1 K. This transition is mainly due to the ordering of Cr3+ magnetic moments. Among the compounds with magnetic Ln(3+) ions, only YbCr(BO3)(2) shows an antiferromagnetic ordering of Ln(3+) ion at 2.1 K. (C) 2013 Elsevier Inc. All rights reserved. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/53747 |
| Appears in Collections: | 理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 土井 貴弘
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