Abstract
High-quality centimeter-sized single crystals of La 1.2Sr 1.8− y Ca y Mn 2O 7 (0.0⩽ y⩽0.2) were successfully grown using a floating zone method associated with an image furnace. We present the growth conditions together with a characterization of the single crystals by means of optical and electron microscopy, EDX and ICP⧸AES analysis, DTA-TGA measurements and redox titration, X-ray powder diffraction, Laue X-ray back-reflection and neutron diffraction. We also stress the main aspects of the complex thermodynamical and kinetic behaviors of these compounds.
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