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Structural and Electrical Characterization of the Series La 1.33 Na x Mn x Ti 2–x O 6
Author(s) -
Ruiz Ana Isabel,
López María Luisa,
Veiga María Luisa,
Pico Carlos
Publication year - 2000
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/(sici)1099-0682(200004)2000:4<659::aid-ejic659>3.0.co;2-b
Subject(s) - chemistry , orthorhombic crystal system , perovskite (structure) , ionic bonding , conductor , electronic structure , series (stratigraphy) , dielectric , phase (matter) , crystallography , crystal structure , ion , computational chemistry , optoelectronics , materials science , composite material , organic chemistry , paleontology , biology
A new series of perovskite‐type materials of general formula La1.33NaxMnxTi2–xO6 (x = 0.66, 0.55 and 0.44) was obtained and characterized. The common structure is rhombohedral (space group R3cbar) although a transition to orthorhombic (space group Ibmm) is observed between 400 and 600 K for the x = 0.66 phase. Complex impedance techniques and charge/discharge cycles show a different electrical behavior that varies from a purely electronic conductor (x = 0.66) to a mixed electronic‐ionic behavior for the other phases.