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Magnetization and Susceptibility of Sn_{1-x}Gd_{x}Te

100%

Górska M., Górska J., Green S., Golacki Z.

Acta Physica Polonica A

1991

vol. 80

issue 3

377-380

The magnetization and magnetic susceptibility of Bridgman-grown Sn_{1-x}Gd_{x}Te with values of x up to 0.09 have been measured over a temperature range from 2 to 300 K and in magnetic fields up to 5.5 T. The magnetic susceptibility data followed the Curie-Weiss relation with a small Curie temperature that indicated a weak antiferromagnetic coupling among Gd ions. The magnetic field dependence of the magnetization was fitted to a modified Brillouin function with parameter values that agreed fairly well with those from Curie-Weiss plots. The value of the exchange parameter was larger than in Pb_{1-x}Gd_{x}Te. The samples were p-type with carrier concentrations up to 1.3 x 10^{21} cm^{-3}. The ferromagnetic or spin-glass phase due to the RKKY interaction was not observed.

Magnetization and Susceptibility of Cd_{1-x}Co_{x}Se

88%

Górska M., Anderson J., Green S., Kido G., Giriat W.

Acta Physica Polonica A

1992

vol. 82

issue 5

753-756

The magnetization and magnetic susceptibility of Bridgman-grown Cd_{1-x}Co_{x}Se with values of x up to 0.04 have been measured over a temperature range from 2 to 390 K and in magnetic fields up to 23 T. A pair-exchange value J/k_{B} of about -3 K was obtained from the magnetic field dependence of the magnetization. This exchange is probably due to the next-nearest-neighbor interaction. The high-temperature susceptibility data indicated a presence of the Curie-Weiss like paramagnetism and the temperature independent Van Vleck type paramagnetism.

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2 Acta Physica Polonica A

1 1992

1 1991

2 Green S.

2 Górska M.

1 Anderson J.

1 Giriat W.

1 Golacki Z.

1 Górska J.

1 Kido G.

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Magnetization and Susceptibility of Sn_{1-x}Gd_{x}Te

Magnetization and Susceptibility of Cd_{1-x}Co_{x}Se