A double-layer perovskite manganese oxide single-phase film material with vertically aligned nanostructures and its preparation method
A technology of double-layer perovskite and manganese oxide, which is applied in the direction of manganese compounds, chemical instruments and methods, nanotechnology, etc., can solve the problems such as difficult to obtain nanostructure growth
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[0027] The specific steps of preparation are as follows:
[0028] S1, according to the chemical formula La 1-x Ca x MnO 3 Select x=0.5, that is, the chemical formula of the material is La 0.5 Ca 0.5 MnO 3 According to the molar ratio of lanthanum, calcium, and manganese, weigh lanthanum oxide, calcium oxide, and manganese oxide respectively, grind them evenly with an agate bowl, and then sinter at high temperature for many times to form lanthanum calcium manganese oxide powder. Finally, it is sintered at high temperature through mold pressing to form La 0.5 Ca 0.5 MnO 3 target.
[0029] S2, select (LaAlO 3 ) 0.3 (Sr 2 AlTaO 6 ) 0.7 (001)[LSAT(001)] single crystal substrate. First, the substrate and the La prepared in S1 0.5 Ca 0.5 MnO 3 The target is mounted in a pulsed laser deposition system and the chamber is then evacuated. The substrate was first heated to 680 °C before the thin film was prepared. Then a superconducting magnet is used to apply a strong...
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