H-T Phase Diagram of Magnetic Semiconductor Thin Films - Experiment

• Authors: M. Lubecka , L.J. Maksymowicz , R. Szymczak , W. Powroźnik
• Languages of publication: EN

Abstracts

EN

We used the irreversibilities between the field cooled and zero field cooled dc magnetization to determine the field and composition dependence of the spin-glass freezing temperature in CdCr_{2}Se_{4} : In (REE) and CdCr_{2-2x}In_{2x}Se_{4} (0.15 ≤ x ≤ 0.35) (SG) thin films. The H-T phase diagram of samples with REE has two instability lines: the Gabay-Toulouse-type (G-T) and the De Almeida-Thouless-type (A-T) while samples in SG state are characterized by the A-T line. The A-T line of thin films was used for calculation the normalised internal magnetic field h_{m} of infinite spin clusters with long range ordering.

Keywords

EN

75.30.Gw; 75.50.Lk; 64.60.Cn

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1997
• Volume: 92
• Issue: 2
• Pages: 433-436

Dates

published

1997-08

Contributors

author

M. Lubecka

• Department of Electronics, UM & M, Al. Mickiewicza 30, 30-059 Kraków, Poland

author

L.J. Maksymowicz

• Department of Electronics, UM & M, Al. Mickiewicza 30, 30-059 Kraków, Poland

author

R. Szymczak

• Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warszawa, Poland

author

W. Powroźnik

• Department of Electronics, UM & M, Al. Mickiewicza 30, 30-059 Kraków, Poland