Evolution of the Electronic Properties of SrFe1 −x−y−zAlxMnyCozO3 Solid Solutions Depending on the Composition and the Degree of Localization of Electronic States

• Published in: JETP letters Vol. 118; no. 1; pp. 51 - 57
• Main Authors: Zainullina, V. M., Korotin, M. A., Kozhevnikov, V. L.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-07-2023; Springer Nature B.V
• Subjects: Aluminum; Atomic; Biological and Medical Physics; Biophysics; Carrier density; Coherent potential approximation; Condensed Matter; Electrode materials; Electron states; Ferrites; Localization; Magnetic properties; Molecular; Optical and Plasma Physics; Particle and Nuclear Physics; Physics; Physics and Astronomy; Quantum Information Technology; Solid solutions; Solid State Physics; Spintronics
• ISSN: 0021-3640; 1090-6487
• DOI: 10.1134/S0021364023601483

The genesis of the electronic spectrum in SrFe
1 −
x
Al
x
O
3
, SrFe
1 −
x
Mn
x
O
3
, SrFe
1 −
x
Co
x
O
3
, SrFe
1 − 2
x
Al
x
Co
x
O
3
, and SrFe
1 −

y − z
Mn
y
Co
z
O
3
cubic solid solutions of strontium ferrite, where
and
,
, is studied in the coherent potential approximation. The inclusion of electron correlations on 3
d
atoms makes it possible to reproduce the experimental content tendencies in the variation of the electronic and magnetic properties. It is shown that codoping of ferrite with cobalt and aluminum effectively increases the concentration of electron carriers and their degree of localization in SrFe
1 −
x
− 0.15
Al
x
Co
0.15
O
3
, which is of interest in the development of oxide thermoelectrics. Due to a relatively large contribution from delocalized states at the Fermi level, SrFe
1 −
y
−
z
Mn
y
Co
z
O
3
solid solutions with
are promising electrode materials.