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Synthesis and structure of Sr2MnGaO5+δ brownmillerites with variable oxygen content

✍ Scribed by Artem M. Abakumov; Marina G. Rozova; Anastasiya M. Alekseeva; Maksim L. Kovba; Evgeny V. Antipov; Oleg I. Lebedev; Gustaaf Van Tendeloo

Book ID
114370745
Publisher
Elsevier Science
Year
2003
Tongue
English
Weight
751 KB
Volume
5
Category
Article
ISSN
1293-2558

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Synthesis and Crystal Structure of the N
Synthesis and Crystal Structure of the Novel Layered Manganese Oxides Ca2MnGaO5+δ and Sr2MnGaO5+δ
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The new layered oxides Ca 2 MnGaO 5ϩδ and Sr 2 MnGaO 5ϩδ were synthesized by solid state reaction from stoichiometric amounts of CaO (SrO), Mn 2 O 3 and Ga 2 O 3 in evacuated silica tubes and annealed at 1000 °C for 8 days with one intermediate regrinding. After annealing the samples were quenched.

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Synthesis, Crystal Structure, and Magnetic Properties of a Novel Layered Manganese Oxide Sr2MnGaO5+δ
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New Sr 2 MnGaO 4.97 complex oxide was synthesized by solid state reaction in sealed silica tubes at 950+10003C. The Sr 2 MnGaO 4.97 crystal structure was re5ned from X-ray powder di4raction data. Sr 2 MnGaO 4.97 is based on the Ima2 brownmillerite-type structure with apically elongated MnO 6 octahed