Electrical and Magnetic Studies of Zn_{x}Mn_{y}Cr_{z}Se_{4} p-Type Semiconductors

• Authors: I. Jendrzejewska , T. Groń , H. Duda , P. Zajdel , A. Pacyna , E. Maciążek
• Languages of publication: EN

Abstracts

EN

The structural, electrical and magnetic investigations carried out on the Zn_{x}Mn_{y}Cr_{z}Se_{4} polycrystals with y = 0.19, 0.29 and 0.38 revealed the spinel structure with the Mn ions occupying tetrahedral sites, p-type conduction with polaronic transport at high temperatures and antiferromagnetic order with a Néel temperature of 20 K and a Curie-Weiss temperature of 103 K. With increasing Mn content in a sample both the effective magnetic moment and the re-entrant temperature increase while the first and second critical fields connected with a metamagnetic transition and the breakdown of the conical spin arrangement decrease, respectively. These results are interpreted in terms of giant cubic anisotropy as well as an effect of Mn impurities on the screw structure of ZnCr_{2}Se_{4}.

Keywords

EN

75.50.Pp; 75.30.Kz; 75.30.Et

Discipline

• 75.30.Et: Exchange and superexchange interactions(see also 71.70.Gm Exchange interactions)
• 75.50.Pp: Magnetic semiconductors
• 75.30.Kz: Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.)(for ferroelectric phase transitions, see 77.80.B-; for superconductivity phase diagrams, see 74.25.Dw)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2009
• Volume: 116
• Issue: 5
• Pages: 913-915

Dates

published

2009-11

Contributors

author

I. Jendrzejewska

• Institute of Chemistry, University of Silesia, Bankowa 14, 40-006 Katowice, Poland

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

P. Zajdel

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

author

A. Pacyna

• The Henryk Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences, Radzikowskiego 152, 31-342 Kraków, Poland

author

E. Maciążek

• Institute of Chemistry, University of Silesia, Bankowa 14, 40-006 Katowice, Poland

References

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Identifiers

DOI

10.12693/APhysPolA.116.913