Lithium oxide and niobium pentaoxide are materials which are used as lithium niobate. XRD result showed that lithium oxide has anti-flourite (cubic) structure with lattice parameter of a is 4.617 Ã…. Niobium pentaoxide has monoclinic structure and lattice parameter of a is 18.5070 Ã…, b is 7.7679 Ã… and c is 17.5994 Ã…. Keywords: crystal structure ,lattice parameter, lithium oxide, niobium pentaoxide, XRD.
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