X-Ray, Ir and Magnetochemical Studies on Calcium Manganese Hydroxyapatites release_6u4wuj2irbaqhlpgss4kscneqq

Abstract

Post-Graduate Department of Chemistry, Khallikote College, Berhampur-760 001 <em>Manuscript received 1 June 1988, revised 20 March 1989, accepted 21 December 1989</em> <strong>Manganese hydroxyapatite, MnHA and its solid solutions with calcium hydroxy­apatite CaHA, have been synthesised. The effect of substitution of manganese in CaHA is studied by X-ray, ir and magnetochemical studies. The formation of homo­geneous solid solutions of CaHA and MnHA is indicated from the measurement of lattice constants. In the ir spectra, the internal modes of the PO₄ ion are shifted to lower frequencies consequent upon increase in cation mass and cation-anion bond strength. MnHA and its solid solutions with CaHA are found to be paramagnetic</strong>
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