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

Materials Research

Cássio Morilla-santos²  Wido Herwig Schreiner¹  Paulo Noronha Lisboa-filho¹ 

[1] ,Universidade Estadual Paulista Programa de Pós-Graduação em Ciência e Tecnologia de Materiais Bauru SP ,Brazil

关键词: chemical solution deposition;    Pechini method;    spin-coating;    magnetic material;   

DOI  :  10.1590/S1516-14392011005000036

来源: SciELO

【 摘 要 】

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.

【 授权许可】

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