Abakumov, Artem M., Hadermann, Joke ORCID: 0000-0002-1756-2566, Batuk, Maria ORCID: 0000-0003-1411-9785, D'Hondt, Hans, Tyablikov, Oleg A., Rozova, Marina G., Pokholok, Konstantin V., Filimonov, Dmitry S., Sheptyakov, Denis V., Tsirlin, Alexander A., Niermann, Daniel, Hemberger, Joachim, Van Tendeloo, Gustaaf and Antipov, Evgeny V. (2010). Slicing the Perovskite Structure with Crystallographic Shear Planes: The A(n)B(n)O(3n-2) Homologous Series. Inorg. Chem., 49 (20). S. 9508 - 9517. WASHINGTON: AMER CHEMICAL SOC. ISSN 1520-510X

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Abstract

A new A(n)B(n)O(3-n) homologous series of anion-deficient perovskites has been evidenced by preparation of the members with n = 5 (Pb2.9Ba2.1Fe4TiO13) and n = 6 (Pb3.8Bi0.2Ba2Fe4.2Ti1.8O16) in a single phase form. The crystal structures of these compounds were determined using a combination of transmission electron microscopy and X-ray and neutron powder diffraction (S.G. Ammm, a= 5.74313(7), b= 3.98402(4), c= 26.83780(4) angstrom, R-I= 0.035, R-P = 0.042 for Pb2.9Ba2.1Fe4TiO13 and S.G. Imma, a = 5.7199(1), b = 3.97066(7), c = 32.5245(8) angstrom, R-I = 0.032, R-P = 0.037 for Pb3.813i0,2Ba2Fe4,2Ti1.8016). The crystal structures of the A(n)B(n)O(3n-2) homologues are formed by slicing the perovskite structure with (101)p crystallographic shear (CS) planes. The shear planes remove a layer of oxygen atoms and displace the perovskite blocks with respect to each other by the 1/2[110](p) vector. The CS planes introduce edgesharing connections of the transition metal oxygen polyhedra at the interface between the perovskite blocks. This results in intrinsically frustrated magnetic couplings between the perovskite blocks due to a competition of the exchange interactions between the edge- and the corner-sharing metal oxygen polyhedra. Despite the magnetic frustration, neutron powder diffraction and Mossbauer spectroscopy reveal that Pb2.9Ba2.1Fe4TiO13 and Pb3.8Bi0.2Ba2Fe4.2Ti1.8O16 are antiferromagnetically ordered below TN = 407 and 343 K, respectively. The Pb2.9Ba2.1Fe4TiO13 and Pb3.8Bi0.2Ba2Fe4.2Ti1.8O16 compounds are in a paraelectric state in the 5-300 K temperature range.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Abakumov, Artem M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hadermann, JokeUNSPECIFIEDorcid.org/0000-0002-1756-2566UNSPECIFIED
Batuk, MariaUNSPECIFIEDorcid.org/0000-0003-1411-9785UNSPECIFIED
D'Hondt, HansUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tyablikov, Oleg A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Rozova, Marina G.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pokholok, Konstantin V.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Filimonov, Dmitry S.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sheptyakov, Denis V.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Tsirlin, Alexander A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Niermann, DanielUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hemberger, JoachimUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Van Tendeloo, GustaafUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Antipov, Evgeny V.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-494194
DOI: 10.1021/ic101233s
Journal or Publication Title: Inorg. Chem.
Volume: 49
Number: 20
Page Range: S. 9508 - 9517
Date: 2010
Publisher: AMER CHEMICAL SOC
Place of Publication: WASHINGTON
ISSN: 1520-510X
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
OXIDE; CHEMISTRYMultiple languages
Chemistry, Inorganic & NuclearMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/49419

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