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Cation Distribution in Fe_{3(1-δ)}O_{4} and Low Level Doped Fe_{3-x}M_{x}O_{4}, M=Ti, Zn, Al

100%

Kąkol Z., Kozłowski A., Sabol J., Metcalf P., Honig J.

Acta Physica Polonica A

1994

vol. 85

issue 1

223-227

Systematic magnetic saturation moment and electrical resistivity measurements of the Fe_{3(1-δ)}O_{4} and Fe_{3-x}M_{x}O_{4} (M = Ti, Zn, Al) are presented. Cation distributions for low level doping are proposed and compositional dependencies of the Verwey transition temperature are determined. The latter show striking similarities in their dependence on cation vacancies and dopant concentration for any extraneous cations. These data are the basis for the analysis of the correlation between the presented cations distributions and the Verwey transition.

Solubility and Segregation of Co in CdTe-Based Ternary and Quaternary Alloys

86%

Miotkowska S., Dynowska E., Miotkowski I., Alawadhi H., Lewicki A., Metcalf P., Ramdas A.

Acta Physica Polonica A

2002

vol. 101

issue 5

735-742

Single crystals of Cd_{1-x}Co_xTe and Cd_{1-x-y}Co_xMn_yTe are characterized with X-ray powder diffraction and electron microprobe to establish compositional dependence of the lattice parameters and deduce Co solubility limit. The experimental compositional profiles are examined on specimens taken from various locations of ingots along their longitudinal axes and compared with normal freezing distributions. The values of Co segregation coefficient are analyzed for both ternary and quaternary alloys in terms of normal freezing mode.

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2 Acta Physica Polonica A

1 2002

1 1994

2 Metcalf P.

1 Alawadhi H.

1 Dynowska E.

1 Honig J.

1 Kozłowski A.

1 Kąkol Z.

1 Lewicki A.

1 Miotkowska S.

1 Miotkowski I.

1 Ramdas A.

1 Sabol J.

Search results

Cation Distribution in Fe_{3(1-δ)}O_{4} and Low Level Doped Fe_{3-x}M_{x}O_{4}, M=Ti, Zn, Al

Solubility and Segregation of Co in CdTe-Based Ternary and Quaternary Alloys