2024-03-28T16:32:54Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/134842022-12-20T10:35:55Zcom_10261_78com_10261_3col_10261_331
Peiteado, Marco
Sturm, S.
Caballero Cuesta, Amador
Makovec, D.
2009-06-05T06:51:06Z
2009-06-05T06:51:06Z
2008-05-22
Acta Materialia 56(15): 4028-4035 (2008)
1359-6454
http://hdl.handle.net/10261/13484
10.1016/j.actamat.2008.04.024
http://dx.doi.org/10.13039/501100007273
The thermal evolution of the Zn–Mn–O system in air was studied by X-ray diffraction, transmission electron microscopy–energy dispersive spectroscopy and electron energy loss spectroscopy. The obtained results suggest that this evolution involves the formation of different Mn(3−x)ZnxO4 spinel-type phases. With increasing temperature these spinels experience phase transformations which are found to be induced by the Mn(IV) to Mn(III) reduction process. This last cation is an active Jahn–Teller ion which leads to an appreciable distortion of the Mn(3−x)ZnxO4 spinel structure, from a cubic symmetry at low temperatures to highly distorted tetragonal symmetries at high temperatures.
eng
closedAccess
Manganese-doped ZnO
Binary oxides
Spinels
Phase transformations
EELS
Mn(3−x)ZnxO4 spinel phases in the Zn–Mn–O system
artículo