Crystal growth and characterization of Marokite CaMn 2O 4+ δ

Centimeter-sized single crystals of CaMn 2O 4+ δ , commonly known as Marokite, were grown using the floating-zone method. The growth conditions are reported along with a discussion of a simple method for polycrystalline rod preparation, which differs from the typical cold isostatic pressure procedur...

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Bibliographic Details
Published inJournal of crystal growth Vol. 310; no. 14; pp. 3325 - 3330
Main Authors White, B.D., dos Santos, C.A.M., Souza, J.A., McClellan, K.J., Neumeier, J.J.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 2008
Subjects
A1. Characterization
A2. Floating zone technique
A2. Single-crystal growth
B1. Manganites
61.10.Nz
81.20.Ev
A2. Single-crystal growth
B1. Manganites
A2. Floating zone technique
A1. Characterization
81.10.Fq
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Summary:Centimeter-sized single crystals of CaMn 2O 4+ δ , commonly known as Marokite, were grown using the floating-zone method. The growth conditions are reported along with a discussion of a simple method for polycrystalline rod preparation, which differs from the typical cold isostatic pressure procedure. Crystal characterization was determined by powder X-ray diffraction, back-reflection Laue diffraction, iodometric titration, energy-dispersive X-ray spectrometry, and vibrating sample magnetometry. Polycrystalline rods, composed of stoichiometric Marokite, were found to produce crystals with CaMnO 3 as a secondary impurity phase as revealed by magnetic measurements and powder diffraction. Crystals grown from polycrystalline rods with excess manganese oxide produced single crystals of high quality without impurity phases.
ISSN:0022-0248
1873-5002
DOI:10.1016/j.jcrysgro.2008.04.005