Electrical and Magnetic Studies of the Cd_{x}Cr_{y}V_{z}Se_{4} Spinels

• Authors: T. Groń , H. Duda , E. Malicka , B. Zawisza , J. Krok-Kowalski , A. Pacyna
• Languages of publication: EN

Abstracts

EN

The electrical and magnetic investigations carried out on the polycrystalline spinels with the general chemical formula Cd_{x}Cr_{y}V_{z}Se_{4} (where z = 0.06, 0.12, 0.24, and 0.31) revealed semiconducting and ferromagnetic properties with a Curie temperature of 127.5 K. A step-like structure of the electrical conductivity, σ(T), was observed for the polycrystal containing 6% V ions in the octahedral sites while the remaining samples showed a typical Arrhenius behaviour of σ(T). These effects are interpreted in terms of ferromagnetic spin clusters which finally dissolve on going towards the paramagnetic limit including non-stoichiometry.

Keywords

EN

72.80.Jc; 75.50.Pp; 75.50.Dd

Discipline

• 72.80.Jc: Other crystalline inorganic semiconductors
• 75.50.Dd: Nonmetallic ferromagnetic materials
• 75.50.Pp: Magnetic semiconductors

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2009
• Volume: 116
• Issue: 5
• Pages: 969-970

Dates

published

2009-11

Contributors

author

T. Groń

• Institute of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice, Poland

author

H. Duda

• Institute of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice, Poland

author

E. Malicka

• Institute of Chemistry, University of Silesia, Szkolna 9, 40-006 Katowice, Poland

author

B. Zawisza

• Institute of Chemistry, University of Silesia, Szkolna 9, 40-006 Katowice, Poland

author

J. Krok-Kowalski

• Institute of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice, Poland

author

A. Pacyna

• The Henryk Niewodniczański Institute of Nuclear Physics, E. Radzikowskiego 152, 31-342 Kraków, Poland

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Identifiers

DOI

10.12693/APhysPolA.116.969