The BaLn(sub)2(/sub)O(sub)4(/sub) family has been synthesized successfully as single crystals by the flux-growth method. The phases crystallize in the CaV(sub)2(/sub)O(sub)4(/sub)
structure prototype in space group Pnma (# 62). The structure has been studied using single-crystal x-ray diffraction, and stoichiometry confirmed with EDS, and the unit cell parameters and
atomic positions have been determined for the whole lanthanide series (with the exception of the Lu compound). The effects of the lanthanide ionic radius on the atomic positions in the unit
cell has been studied in terms of fractional atomic coordinates, bond lengths and angles, and bond valence sums. Magnetic measurements have been performed on the series with the exception of
the La, Eu, and Lu members in the form of susceptibility versus temperature. The crystals all show signs of geometric antiferromagnetic frustration with the Néel temperatures significantly
below the temperature predicted by the Weiss constant. Additionally some members of the family, namely BaCe(sub)2(/sub)O(sub)4(/sub), BaNd(sub)2(/sub)O(sub)4(/sub),
BaPr(sub)2(/sub)O(sub)4(/sub), BaSm(sub)2(/sub)O(sub)4(/sub), BaTb(sub)2(/sub)O(sub)4(/sub), and BaYb(sub)2(/sub)O(sub)4(/sub) show significant crystal field splitting, that causes deviation
from Currie-Weiss behavior / A Thesis submitted to the Interdisciplinary Program in Materials Science in partial fulfillment of the requirements for the degree of Master of
Science. / Summer Semester, 2014. / July 21, 2014. / Includes bibliographical references. / Theo Siegrist, Professor Directing Thesis; Susan Latturner, Committee Member; Sachin Shanbhag, Committee Member.
| Identifer | oai:union.ndltd.org:fsu.edu/oai:fsu.digital.flvc.org:fsu_252862 |
| Contributors | Lundberg, Matthew (authoraut), Siegrist, Theo M. (professor directing thesis), Latturner, Susan (committee member), Shanbhag, Sachin (committee member), Florida State University (degree granting institution), The Graduate School (degree granting college), Program in Materials Science (degree granting department) |
| Publisher | Florida State University, Florida State University |
| Source Sets | Florida State University |
| Language | English, English |
| Detected Language | English |
| Type | Text, text |
| Format | 1 online resource (95 pages), computer, application/pdf |
| Rights | This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s). The copyright in theses and dissertations completed at Florida State University is held by the students who author them. |
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