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  Synthesis, crystal structure and properties of RbMnO2

Pfeiffer, S., & Jansen, M. (2007). Synthesis, crystal structure and properties of RbMnO2. Zeitschrift für anorganische und allgemeine Chemie, 633(15), 2558-2562.

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 Creators:
Pfeiffer, S.1, Author           
Jansen, M.1, Author           
Affiliations:
1Abteilung Jansen, Former Departments, Max Planck Institute for Solid State Research, Max Planck Society, ou_3370503              

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Free keywords: rubidium manganate; azide/nitrate route; crystal structure; magnetic properties
 Abstract: RbMnO2 was prepared via the azide/nitrate route. Stoichiometric mixtures of the precursers (Mn2O3, RbN3 and RbNO3) were heated in a special regime up to 600 C and annealed at this temperature for 30 h in specially designed silver crucibles. Single crystals have been grown by annealing a 1:1 mixture of Rb2O and MnOx at 585 C for 1200 h. According to the crystal structure determination Mn3+ is in a square-pyramidal coordination by oxygen. These [MnO5] units form double chains extending along the crystallographic c-axis. RbMnO2 shows Curie-Weiss behaviour down to similar to 100 K. A fit of the susceptibility data yields an average value of the magnetic moment (per manganese atom) of mu(eff) = 5.33 mu(B), and theta(P) = -820 K. At 50 K and low field strength onset of ferromagnetic order due to spin canting has been observed.

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Language(s): eng - English
 Dates: 2007
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 338840
ISI: 000250808900005
 Degree: -

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Title: Zeitschrift für anorganische und allgemeine Chemie
Source Genre: Journal
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Publ. Info: -
Pages: - Volume / Issue: 633 (15) Sequence Number: - Start / End Page: 2558 - 2562 Identifier: ISSN: 0044-2313