Chemical deposition of La0.7Ca0.3MnO3±δ films on ceramic substrates

• Autor(a) principal: Morilla-Santos, Cássio [UNESP]
• Data de Publicação: 2011
• Outros Autores: Schreiner, Wido Herwig, Lisboa Filho, Paulo Noronha [UNESP]
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.1590/S1516-14392011005000036; http://hdl.handle.net/11449/8412
• topic: chemical solution deposition; Pechini method; spin-coating; magnetic material

In this paper, it is reported the growth of La0.7Ca0.3MnO3±δ films using a chemical solution deposition method (CSD) by the spin-coating technique. Such solution was prepared through a route based on modified polymeric precursor method. Spin-coating deposition on different ceramic substrates was performed and analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The magnetic response of the prepared specimens was studied using a SQUID magnetometer. The obtained results indicated uniform deposition on SrTiO3 and LaAlO3 substrates with similar characteristics. Furthermore, significant differences were detected in the Mn3+/Mn4+ valence ratio and a corresponding diverse magnetic response was observed. The sample prepared on SrTiO3 and LaAlO3 presented a critical temperature around 270 K as expected.