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 Please use this identifier to cite or link to this item: http://hdl.handle.net/10651/5991

 Title: Structural and magnetic phases of Fe(ND3)(2)PO4 Author(s): Fernández Alfonso, María Belén AuroraTrobajo Fernández, María del CaminoSalvado Sánchez, Miguel ÁngelPertierra Castro, María del PilarGarcía-Granda, SantiagoRodríguez Fernández, JesúsFernández Díaz, María TeresaBlanco Rodríguez, Jesús ÁngelGarcía Menéndez, José Rubén Issue date: 2008 Publisher version: http://dx.doi.org/10.1088/0953-8984/20/10/104227 Citation: Journal of Physics-Condensed Matter, 20(10), (2008); doi:10.1088/0953-8984/20/10/104227 Abstract: Polycrystalline samples of Fe(ND3)2PO4 were prepared by means of a hydrothermal route and characterized using powder x-ray diffraction, scanning electron microscopy, chemical and thermal analysis, magnetic measurements, specific heat and neutron diffraction experiments. This material orders within an orthorhombic (Pnma space group) crystal structure at room temperature, but below 220 K the crystal structure changes towards a monoclinic P 21/n structure through a phase transition with almost no latent heat. Furthermore, the magnetic cell at 2 K is twice the size of the crystallographic cell observed at 80 K. The magnetic structure associated with the Fe(III) ions is thus commensurate with the crystal lattice having a propagation vector \vec k=(1/2, 0, 0) , the magnetic moments lying in the yz plane of the crystallographic cell. URI: http://hdl.handle.net/10651/5991 ISSN: 0953-8984 Local identifier: 630 Appears in Collections: Artículos

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