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Spontaneous Transformations in the Solid State: Towards Porous and Biphasic Materials

Published online by Cambridge University Press:  26 February 2011

Eric S. Toberer  and
Ram Seshadri
Eric S. Toberer
Affiliation:
[email protected], University of California, Santa Barbara, Materials Dept., 84 Chester St, Pasadena, CA 91106, Santa Barbara, CA, 93106, United States, (541) 913 2721
Ram Seshadri
Affiliation:
[email protected], University of California, Santa Barbara, Materials Dept., Santa Barbara, CA, 93106, United States
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Abstract

Epitaxial thin films of Mn3O4 and ZnMn2O4 have been grown hydrothermally on (100) and (111) MgAl2O4 substrates. Film growth was characterized as a function of pH, concentration, and time and thin film X-ray diffraction revealed that the resulting films are an epitaxial continuation of the underlying spinel lattice. Reduction of these films to MnO occurred topotactically and in the case of ZnMn2O4, resulted in mesopores aligned along the <100> directions. As the films maintain an epitaxial relationship with the substrate, the mesopores are aligned macroscopically within a single crystal lattice.

Keywords

thin filmporosityhydrothermal
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 988: Symposium QQ – Solid-State Chemistry of Inorganic Materials VI , 2006 , 0988-QQ05-07
Copyright
Copyright © Materials Research Society 2007

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