Microstructural Characterisation of Cuprate / Manganate Films on (110) SrTiO3Deposited by Laser Ablation

Autor:	I P Jones, Y Y Tse, R I Chakalov, Ratnakar Palai, C. M. Muirhead, M M Joshi
Rok vydání:	2006
Předmět:	History Laser ablation Materials science Condensed matter physics Manganate Substrate (electronics) Manganite Microstructure Epitaxy Computer Science Applications Education chemistry.chemical_compound Crystallography chemistry Cuprate High-resolution transmission electron microscopy
Zdroj:	Journal of Physics: Conference Series. 26:115-118
ISSN:	1742-6596 1742-6588
DOI:	10.1088/1742-6596/26/1/027
Popis:	Cross-sectional TEM and microanalysis were carried out to understand at a microscopic level the effects of microstructure and chemistry on the physical properties of manganites and manganite/cuprate films. TEM observations on pure LCMO grown on a (110) STO substrate were carried out first to determine the defect structure and detect any formation of second phase precipitates, as well as microstructural changes not detectable by X-ray reflections. La0.7Ca0.3MnO3 (LCMO) grows epitaxially on a (110) SrTiO3 (STO) substrate. HRTEM reveals a nearly defect-free interface between LCMO and STO with a few irregularly arranged misfit dislocations. The microstructure obtained from laser ablated nanometre scaled La0.7Ca0.3MnO3 (LCMO) / YBa2Cu3O7-δ (YBCO) / PrBa2Cu3O7 (PBCO) multilayers on (110) STO was also studied. Diffraction patterns show that all films grow epitaxially on top of the (110) STO substrate, with the c-axis of YBCO in plane. There is a roughness of about 10nm between PBCO and YBCO and the roughness is increased at the YBCO - LCMO interface.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d00a4d463a5bde16cf4d08ac67ce21de https://doi.org/10.1088/1742-6596/26/1/027 Zobrazit plný text záznamu