Pulsed laser deposition of homo- and hetero-epitaxial thin films of the exotic La5Ca9Cu24O41 compound on oxide and Si substrates
Athanasopoulos, G. I.
SourceJournal of Optoelectronics and Advanced Materials
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Pristine and transition metal-doped La5Ca9Cu 24O41 thin films were fabricated by pulsed laser deposition in oxygen atmosphere. The effect of magnetic doping, type of substrate and growth temperature on the crystallographic orientation and surface topography of the films was investigated. X-ray diffraction data reveals that pristine La5Ca9Cu24O41 films are grown homo- and hetero-epitaxially on La5Ca9Cu 24O41 (0 0 1) and La4Ca10Cu 24O41 (0 0 1) single crystals, respectively, whereas those deposited on Si (0 0 1) single crystals are highly b-axis oriented. In addition, (1%) Ni-, Co- and Fe- doped La5Ca9Cu 24O41 films fabricated on SrTiO3 (0 0 1), MgO (0 0 1) and Si (0 0 1) substrates are highly b-axis oriented.