The commensurate crystal structure of the magnetic phase occurring below 7 K of the multiferroic Pb2MnWO6 perovskite has been solved by the introduction of the superspace approach. This lead based double perovskite is characterized by a complex ferrielectric noncentrosymmetric nuclear structure with orthorhombic symmetry stable in a wide temperature range. As indicated from the analysis of powder neutron diffraction data, the low temperature antiferromagnetic structure showing propagation vector κ= [1/4 0 0] is stabilized by a multistep process involving the evolution from incommensurate to commensurate spin ordering with a concomitant change of the magnetic symmetry. The determination of the Pb2MnWO6 magnetic structure offers a meaningful example of the superspace application and provides a detailed phase diagram of the involved magnetic states. Nowadays this ordered perovskite could be considered as a new type of multiferroic material encountering ferrielectric property and long period antiferromagnetic structure.

Superspace application on magnetic structure analysis of the Pb2MnWO6 double perovskite system / Orlandi, Fabio; Righi, Lara; C., Ritter; Pernechele, Chiara; Solzi, Massimo; R., Cabassi; F., Bolzoni; Calestani, Gianluca. - In: JOURNAL OF MATERIALS CHEMISTRY. C. - ISSN 2050-7526. - 2:(2014), pp. 9215-9223. [10.1039/C4TC01450B]

Superspace application on magnetic structure analysis of the Pb2MnWO6 double perovskite system

ORLANDI, Fabio;RIGHI, Lara;PERNECHELE, Chiara;SOLZI, Massimo;CALESTANI, Gianluca
2014-01-01

Abstract

The commensurate crystal structure of the magnetic phase occurring below 7 K of the multiferroic Pb2MnWO6 perovskite has been solved by the introduction of the superspace approach. This lead based double perovskite is characterized by a complex ferrielectric noncentrosymmetric nuclear structure with orthorhombic symmetry stable in a wide temperature range. As indicated from the analysis of powder neutron diffraction data, the low temperature antiferromagnetic structure showing propagation vector κ= [1/4 0 0] is stabilized by a multistep process involving the evolution from incommensurate to commensurate spin ordering with a concomitant change of the magnetic symmetry. The determination of the Pb2MnWO6 magnetic structure offers a meaningful example of the superspace application and provides a detailed phase diagram of the involved magnetic states. Nowadays this ordered perovskite could be considered as a new type of multiferroic material encountering ferrielectric property and long period antiferromagnetic structure.
Superspace application on magnetic structure analysis of the Pb2MnWO6 double perovskite system / Orlandi, Fabio; Righi, Lara; C., Ritter; Pernechele, Chiara; Solzi, Massimo; R., Cabassi; F., Bolzoni; Calestani, Gianluca. - In: JOURNAL OF MATERIALS CHEMISTRY. C. - ISSN 2050-7526. - 2:(2014), pp. 9215-9223. [10.1039/C4TC01450B]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11381/2754504
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