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Conductivity and Phase Transition Study of Sr 2+ ‐Substituted La 2 Mo 1.95 V 0.05 O 9–δ
Author(s) -
Tado Gyati Tachang,
Pandey Arvind
Publication year - 2020
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.202000104
Subject(s) - differential scanning calorimetry , analytical chemistry (journal) , conductivity , scanning electron microscope , materials science , dielectric spectroscopy , electrical resistivity and conductivity , arrhenius plot , phase transition , x ray crystallography , crystallography , diffraction , electrochemistry , chemistry , activation energy , electrode , thermodynamics , optics , physics , chromatography , electrical engineering , composite material , engineering
Solution combustion technique is used for synthesizing La 2− x Sr x Mo 1.95 V 0.05 O 9−δ ( x = 0–0.14). The properties of these compounds are investigated via X‐ray diffraction (XRD), scanning electron microscopy, differential scanning calorimetry (DSC), and electrochemical impedance spectroscopy. No secondary phases are detected in XRD. Complete suppression of αβ phase transition is evident via RT‐XRD and DSC in all doped compounds. Throughout the temperature regime, conductivity is enhanced compared with parent La 2 Mo 2 O 9 . The conductivity plot reveals an Arrhenius to Vogel–Tammann–Fulcher (VTF) type of temperature‐dependent conduction behavior.