Influence of Cu, Ga and Au Dopants and Technology Conditions on the Magnetic Interactions in HgCr_2Se_4 Single Crystals

• Authors: J. Krok-Kowalski , G. Władarz , T. Groń , H. Duda , A. Pacyna , K. Nikiforov , P. Rduch
• Languages of publication: EN

Abstracts

EN

For single crystals HgCr_2Se_4 doped by nonmagnetic Cu^{+}, Au^{2+} and Ga^{3+} ions and single crystals of HgCr_2Se_4 matrix growing in different synthesis conditions both the dc and ac magnetic susceptibility as well as the magnetization have been measured. As it follows from the analysis of the obtained results, paradoxically, the dopants strengthen the long range magnetic interactions of the ferromagnetically ordered single crystals under study, evidenced by the higher values of the ordering temperature in comparison with those ones for pure matrix. An influence of the technological processes connected with deficiency and/or excess of Hg on the long range magnetic interactions was not observed.

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: 2011
• Volume: 120
• Issue: 5
• Pages: 970-972

Dates

published

2011-11

Contributors

author

J. Krok-Kowalski

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

author

G. Władarz

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

A. Pacyna

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

author

K. Nikiforov

• Physico-Mathematical Faculty, K. Tsiolkovski State Pedagogical University, St. Razin str. 26, Kaluga 248023, Russia

author

P. Rduch

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

References

• 1. P.K. Baltzer, P.J. Wojtowicz, M. Robbins, E. Lopatin, Phys. Rev. 151, 367 (1966)
• 2. F.K. Lotgering, in: Proc. Int. Conf. on Magnetism, Nottingham 1964, Ed. L.F. Bates, Institute of Physics, London 1965, p. 533
• 3. J. Krok, J. Spałek, J. Juszczyk, J. Warczewski, Phys. Rev. B 28, 6499 (1983)
• 4. T. Groń, E. Malicka, A.W. Pacyna, Physica B 404, 3554 (2009)
• 5. T. Groń, A.W. Pacyna, E. Malicka, Solid State Phenom. 170, 213 (2011)

Identifiers

DOI

10.12693/APhysPolA.120.970