Investigation of structural, microstructural and magnetic properties of YbxY1-xF3 solid solutions
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2020
Authors
Aleksić, JelenaBarudžija, Tanja
Jugović, Dragana
Mitrić, Miodrag
Bošković, Marko
Jagličić, Zvonko
Lisjak, Darja
Kostić, Ljiljana
Article (Published version)
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In this investigation, we have synthesized YbxY1-xF3 solid solutions by fluorination of yttrium and ytterbium sesquioxides with ammonium hydrogen difluoride. According to the XRD analysis, all synthesized YbxY1-xF3 samples have an orthorhombic crystal structure belonging to the β-YF3 structural type. The refinement of crystal structure was done by the Rietveld method within the Pnma space group using the TCH pseudo-Voigt function. The anisotropic peak broadening was analyzed, and the average apparent crystallite size is about 50 nm with a small anisotropy of shape, while the significant microstrain that is highly anisotropic is present in all samples. The temperature-dependent magnetic susceptibility was analyzed by applying the model of a free ion perturbed by the crystal field. We have obtained the effective magnetic quantum numbers Mieff of four Kramer's doublets of Yb3+ ion along with the entire crystal field splitting of the 2F7/2 manifold of Yb3+ in YF3. The acquired maximum ener...gy splitting of the ground level is about 150 K in our most diluted samples. The field-dependent isothermal magnetization measurements were carried out at various temperatures and analyzed by classical Langevin function. Results obtained from magnetic measurements show that all YbxY1-xF3 (x ≠ 0) solid solutions exhibit pure paramagnetic behavior in the whole temperature range from 2 to 300 K, with a predominant antiferromagnetic exchange interactions.
Keywords:
Crystal and ligand fields / Magnetic measurements / Rare-earth fluorides / X-ray diffractionSource:
Journal of Physics and Chemistry of Solids, 2020, 142, 109449-Publisher:
- Elsevier
Funding / projects:
- Magnetic and radionuclide labeled nanostructured materials for medical applications (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45015)
- Molecular designing of nanoparticles with controlled morphological and physicochemical characteristics and functional materials based on them (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45004)
- The electrical breakdown of gases, surface processes and applications (RS-MESTD-Basic Research (BR or ON)-171025)
- Development, optimization and application of energy-harvesting sensors technology (RS-MESTD-Technological Development (TD or TR)-32026)
- Bilateral collaboration between Serbia and Slovenia (06-00-118/2018-09/32/02)
- Bilateral collaboration between Serbia and Slovenia (BI-RS/18-19-031)
Note:
- Peer-reviewed manuscript: https://hdl.handle.net/21.15107/rcub_dais_8949
DOI: 10.1016/j.jpcs.2020.109449
ISSN: 0022-3697