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Properties of the n=3 Ruddlesden–Popper Phases Sr4Mn3−xFexO10−δ (x=1, 1.5, 2)

✍ Scribed by Ian D. Fawcett; Gabriel M. Veith; Martha Greenblatt; Mark Croft; Israel Nowik

Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
400 KB
Volume
155
Category
Article
ISSN
0022-4596

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✦ Synopsis

We have prepared a series of Fe-substituted Sr 4 Mn 3 ؊x Fe x O 10 ؊ strontium manganates with x ‫؍‬ 1, 3/2, and 2. These compounds adopt the n ‫؍‬ 3 Ruddlesden+Popper structure (I4/mmm), unlike the parent compound Sr 4 Mn 3 O 10 , which contains a network of face-sharing MnO 6 octahedra, with the larger Fe ion preferentially occupying the Mn/Fe (1) middle layer of the corner-sharing trioctahedra slabs. We have investigated their physical properties with X-ray di4raction, X-ray absorption near edge spectroscopy, MoK ssbauer spectroscopy, variable temperature resistivity, and magnetic susceptibility. In addition, for the x ‫؍‬ 2 compound we preformed room temperature neutron diffraction experiments. These compounds need to be formed at high temperatures; as a consequence they are oxygen de5cient and contain some Fe 3 ؉ . They are insulators and exhibit spinglass-like transitions at low temperature.

📜 SIMILAR VOLUMES

ChemInform Abstract: Stabilization of th
ChemInform Abstract: Stabilization of the n = 3 Ruddlesden—Popper Phases: Sr4Mn3-xFexO10-δ and Sr4-γCayMn3O10-δ.
✍ Rongji Chen; Martha Greenblatt; Leonid A. Bendersky 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 36 KB 👁 1 views

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