English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/128813
Título

Order-disorder phase transition in Zn1-xMnxGa2Se4: Long-range order parameter versus x

AutorMorón, M. Carmen; Hull, S.
Fecha de publicación2003
EditorAmerican Physical Society
CitaciónPhysical Review B 67(12): 125208 (2003)
ResumenThe opportunity of the Zn1−xMnxGa2Se4 (0<~x<~1) series for exploring the possibilities of ordering-disordering processes as a function of x is shown. A pumping of Mn ions from one particular site of the crystal lattice to another occurs in this system on addition of Zn. As a consequence, the tetragonal diluted magnetic semiconductor Zn1−xMnxGa2Se4 series exhibits an order-disorder phase transition at xc=0.50±.01 with (c/a)c=1.964±.005. The disordering process is accompanied by an abrupt change in the tetragonal unit cell parameters c and 2−(c/a), a modification of the crystal lattice from defective chalcopyrite to defective stannite and a crossover from space group I−4 to I−42m. The order-disorder phase transition has been quantified through the direct determination of a long-range order parameter η within its whole range of existence (0<~η<~1).
DescripciónUnder the terms of the Creative Commons Attribution License 3.0 (CC-BY).
Versión del editorhttp://dx.doi.org/10.1103/PhysRevB.67.125208
URIhttp://hdl.handle.net/10261/128813
DOI10.1103/PhysRevB.67.125208
Identificadoresdoi: 10.1103/PhysRevB.67.125208
issn: 1098-0121
e-issn: 1550-235X
Aparece en las colecciones: (ICMA) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
Order-disorder.pdf140,25 kBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 

Artículos relacionados:


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.