| Autor: |
M, Ezhilan, Alam, M. Mushtaq, Vijayalakshmi, U., Gupta, Somlee, Dhayalan, Arunkumar, Kannan, S. |
| Předmět: |
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| Zdroj: |
Journal of Biomedical Materials Research, Part B: Applied Biomaterials; Jan2024, Vol. 112 Issue 1, p1-16, 16p |
| Abstrakt: |
The study reports on the use of sol–gel technique to yield zircon type [Zr(1–0.1–x) GdxTi0.1] [(SiO4)1–x(PO4)x] solid solution. Titanium has been used as a mineralizer to trigger zircon formation while equimolar concentrations of Gd3+ and PO43− were added to determine their accommodation limits in the zircon structure. The crystallization of t‐ZrO2 as a dominant phase alongside the crystallization of m‐ZrO2 and zircon were detected at 1200°C while their further annealing revealed the formation of zircon as a major phase at 1300°C. Heat treatment at 1400°C revealed the formation of zircon‐type solid solution [Zr(1–0.1‐x)GdxTi0.1][(SiO4)1−x(PO4)x] comprising the accommodation of 10 mol.% of Gd3+/PO43− at the zircon lattice. Beyond 10 mol.% of Gd3+/PO43−, the crystallization of GdPO4 as a secondary phase is noticed. Structural analysis revealed the expansion of zircon lattice due to the simultaneous occupancy of Gd3+/PO43− for the corresponding Zr4+/SiO44− sites. The mechanical strength of single‐phase zircon solid solution was higher in comparison to that of multiphase materials, namely in the presence of GdPO4 formed as a secondary phase in samples with added equimolar Gd3+/PO43− contents beyond 10 mol.%. Nevertheless, the paramagnetic behavior of the samples demonstrated a steady surge as a function of enhanced Gd3+ content. [ABSTRACT FROM AUTHOR] |
| Databáze: |
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