Synthesis and structural investigation of a unique columnar phase in the Bi2O3–TeO2–V2O5 System.
作者： Vaishali Thakral , Neha Bhardwaj , S. Uma
DOI: 10.1021/IC2017159
关键词:
摘要: A new columnar phase Bi11.65Te1.35V5O34-δ (δ ∼ 1.3) containing VO4 tetrahedra has been identified for the first time in Bi2O3–TeO2–V2O5 system. The formation and extent of substitution Te4+ Bi3+ ions order to stabilize V5+ this composition have confirmed by single crystal analysis, combined with powder X-ray diffraction solid state synthesized bulk crystalline samples. oxide crystallizes a monoclinic system, space group P2/c, unit cell parameters = 11.4616(7) A, b 5.7131(3) c 23.5090(18) β 101.071° (6) (Z 2). structure retains basic features oxides presence [Bi10.65Te1.35O14]n9.35n+ columns along (010) direction, surrounded (VO4) placed planes parallel (100) (001), an isolated bismuth atom between columns. limited substitution, 1.3), exists surprisingly high oxygen deficiency as compar...
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