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Role of an order-disorder phase transition in increasing the exchange magnetic field in a diluted magnetic semiconductor

AutorMorón, M. Carmen; Hull, S.
Fecha de publicación2001
EditorAmerican Physical Society
CitaciónPhysical Review B 64(22): 220402(R) (2001)
ResumenThe controlled substitution of Mn by Zn within the diluted magnetic semiconductor Zn1-xMnxGa2Se4 (0≤x≤1) series induces a pumping of magnetic ions from a defined site of the crystal lattice to another one driving the system to an order-disorder phase transition with xc = 0.50±0.01. A long-range order parameter, η, is defined and directly determined as a function of x within the whole range of composition from neutron-diffraction experiments. An augmentation of the magnetic exchange field by increasing the magnetic dilution occurs as a consequence of that order-disorder process.
DescripciónUnder the terms of the Creative Commons Attribution License 3.0 (CC-BY).
Versión del editorhttp://dx.doi.org/10.1103/PhysRevB.64.220402
Identificadoresdoi: 10.1103/PhysRevB.64.220402
issn: 1098-0121
e-issn: 1550-235X
Aparece en las colecciones: (ICMA) Artículos
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