Please use this identifier to cite or link to this item:
http://hdl.handle.net/11375/8428
Title: | The Magnetic Properties of α and β-Li₂Eu₅O₈ and Neutron Diffraction of VTa₂O₆ |
Authors: | Nyokong, Tebello |
Advisor: | Greedan, J.E. |
Department: | Chemistry |
Keywords: | Chemistry;Chemistry |
Publication Date: | 1981 |
Abstract: | <p>The magnetic susceptibilities of α and β-Li₂Eu₅O₈ powders have been measured. These compounds have ferromagnetic interactions within a chain of Eu²⁺ ions and antiferromagnetic interactions between the chains. The interactions between the chains are very weak and both compounds can be considered to be nearly ideal examples of one dimensional ferromagnets.</p> <p>No three-dimensional ordering was observed in VTa₂O₆ down to a temperature of 10K, contrary to the observation of TN = 24K by Bernier (6). The critical temperature which Bernier observed was probably due to a two-dImensional ordering.</p> <p>The atomic parameters for VTa₂O₆ calculated from the powder neutron data, compare well with the atomic parameters of other trirutiles.</p> |
URI: | http://hdl.handle.net/11375/8428 |
Identifier: | opendissertations/3634 4651 1671464 |
Appears in Collections: | Open Access Dissertations and Theses |
Files in This Item:
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fulltext.pdf | 1.93 MB | Adobe PDF | View/Open |
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