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Magnetic Properties of DyTe

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Pokrzywnicki S., Duczmal M., Pawlak L., Nenkov K.

Acta Physica Polonica A

1997

vol. 92

issue 2

351-354

Dysprosium monotelluride is a metallic substance with one valence electron per formula unit belonging to the conduction band. It crystallizes in the defected NaCl-type structure (a= 0.6070 nm) with cation deficiency in the metal sublattice. AC and DC susceptibilities exhibit a maximum at 15 K and a second maximum at higher temperatures which position is field dependent.

Magnetic Properties of Layer-Type Compounds TlGdS_{2} and TlGdSe_{2}

100%

Duczmal M., Pawlak L., Pokrzywnicki S.

Acta Physica Polonica A

2000

vol. 97

issue 5

839-842

Ternary thallium lanthanide dichalcogenides TlLnX_{2} (X = S, Se, or Te; Ln = lanthanide, except Ce and Pr) crystallize in the rhombohedral structure of α-NaFeO_{2} type ($R\overline{3}m$). Their crystal lattice consists of the layers of Ln^{3+} ions separated by three layers of the non-magnetic ions (-Ln-X-Tl-X-Ln-). The magnetization was measured in the field range 0-14 T. The molecular field constants λ_{m} were estimated by fitting the Brillouin function to the experimental magnetization plots. The difference between the λ_{m} values for the thallium gadolinium sulphide and the selenide corresponds to the different character of Gd-S and Gd-Se bonds and gives rise to the different J_{1} and J_{2} exchange integrals.

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2 Acta Physica Polonica A

1 2000

1 1997

2 Duczmal M.

2 Pawlak L.

2 Pokrzywnicki S.

1 Nenkov K.

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Magnetic Properties of DyTe

Magnetic Properties of Layer-Type Compounds TlGdS_{2} and TlGdSe_{2}