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Synthesis of Sr 1+2 x La 1‐2 x Fe 1‐ x Nb x O 4 ( x =0, 0.1, 0.3, and 0.5) by Sol‐gel Method: Structural, Magnetic, and Dielectric Properties
Author(s) -
Kurnia Arif,
Mufti Nandang
Publication year - 2020
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201904297
Subject(s) - niobium , analytical chemistry (journal) , materials science , antiferromagnetism , microstructure , doping , electrical resistivity and conductivity , grain size , dielectric , phase (matter) , conductivity , thermal conduction , mineralogy , condensed matter physics , chemistry , metallurgy , physics , optoelectronics , organic chemistry , chromatography , quantum mechanics , composite material
One – layered Ruddlesden‐Popper phase Sr 1+2 x La 1‐2 x Fe 1‐ x Nb x O 4 doped with niobium was synthesized using a sol‐gel method for various Nb concentrations ( x =0, 0.1, 0.3, and 0.5). Single‐phase samples could be observed with x =0 and 0.1, while x =0.3 and 0.5 contain additional phases. Microstructure results showed that the increase of niobium content corresponded to a decrease in the grain size of the samples. The magnetic measurements indicated that antiferromagnetic interactions of doped samples had decreased. The dielectric constant of the samples decreased as x increased due to the increase in conductivity. The origin of conduction in the samples might be caused by hopping conduction due to the mixed oxidation states of iron with charge +3 and +4.