Single-crystal growth of La2−2x
Sr1+2x
Mn2O7 under pressure |
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Authors: | D Prabhakaran A T Boothroyd |
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Affiliation: | (1) Clarendon Laboratory, Department of Physics, University of Oxford, Parks Road, Oxford, OX1 3PU |
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Abstract: | Large single crystals of La2–2x
Sr1+2x
Mn2O7 (x=0.3 to 0.525) have been prepared under controlled atmospheric conditions. The crystals were grown by the floating-zone technique in an image furnace under a mixed oxygen/argon atmosphere pressurized to 6–8×105 Pa. Rectangular single crystals with sizes up to 50×9×4 mm3 have been obtained. The phase-purity, composition, and quality of the crystals were analyzed by X-ray diffraction and electron probe microanalysis. The magnetic behavior is found to be sensitive to the composition of the atmosphere during growth. |
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