Magneto-dielectric and magnetoelectric anisotropies of CoFe2O4/Bi5Ti3FeO15 bilayer composite heterostructural films

RSC Advances ◽  
2016 ◽  
Vol 6 (57) ◽  
pp. 52353-52359 ◽  
Author(s):  
Yulong Bai ◽  
Jieyu Chen ◽  
Shifeng Zhao ◽  
Qingshan Lu

Bilayer composite heterostructural films consisting of magnetic CoFe2O4 and multiferroic Bi5Ti3FeO15 films were prepared by the chemical solution deposition method.

1997 ◽  
Vol 36 (Part 1, No. 9B) ◽  
pp. 5930-5934 ◽  
Author(s):  
Wataru Sakamoto ◽  
Akihiro Kawase ◽  
Toshinobu Yogo ◽  
Shin-ichi Hirano

1999 ◽  
Vol 14 (10) ◽  
pp. 4004-4010 ◽  
Author(s):  
J. H. Kim ◽  
F. F. Lange

Epitaxial PbZr0.5Ti0.5O3 (PZT) thin films were grown on (001) LaAlO3 substrates (∼6.1% lattice mismatch) by the chemical solution deposition method. The sequence of epitaxy during heating between 375 and 700 °C/1h was characterized by x-ray diffraction and transmission electron microscopy. At approximately 375 °C/1h, a nanocrystalline metastable fluorite phase of PZT was formed from the pyrolyzed amorphous precursor. At higher temperatures (400–425 °C/1h), thermodynamically stable PZT crystallites were first observed at the interface; with increasing higher temperatures, these nuclei grew across the interface and through the film toward the surface by consuming the metastable nanocrystalline fluorite grains. PZT thin films annealed above ∼500 °C/1h were observed to be dense with an epitaxial orientation relationship of [100](001)PZT‖[100](001)LAO. The metastable nanocrystalline fluorite to the stable single-crystal perovskite transformation gives an extra driving force by providing an additional decrease in free energy in addition to a driving force from the elimination of grain boundary area for epitaxy.


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