Synthesis, Crystal Structure, and Magnetic Properties of FeP3SiO11: First Example of Iron(III)Silicophosphate

Crystal Structure and Magnetic Properties of a New Iron(III) Silicophosphate Fe3P5SiO19 Studied by Neutron Diffraction and Mössbauer Techniques

“…These high values are not unexpected: they are similar to those found in Fe (P O ) (0.41 to 0.42 mm/s) (12) and it has been well established (22) that, thanks to the inductive e!ect, the ionicity of the Fe}O bonds in phosphates is rather high.…”

“…The distance Fe}Fe (3.019 A s ) is comparable to 2.967 and 3.048 A s , values found in Fe (P O ) by Elbouaanani et al (12), and 2.99 A s found in the Fe (PO ) (OH) hydroxyphosphate compound by Ijjaali et al (13).…”

“…In the Fe}P}Si}O system, only two phases have been known until now: iron(III) FeP SiO studied by Elbouaanani et al (1) and iron(II) Fe SiP O described by Glaum and Schmidt (2).…”

Structure Refinement and Magnetic Properties of C–Fe(PO3)3 Studied by Neutron Diffraction and Mössbauer Techniques

“…In the course of an investigation of mixed-valent iron phosphates (13) and silico-phosphates (14), we decide to reinvestigate the physical properties of this compound. In this paper we report on its structural and magnetic proper-ties by means of single-crystal X-ray di!raction, bulk magnetization, powder neutron di!raction, and MoK ssbauer spectroscopy measurements.…”

Synthesis, crystal structure, and magnetic investigations of FePb1−xBaxP2O7 (0≤x<1)

“…In this structure, each iron atom is connected to six surrounding iron atoms through six Fe -O -P -O -Fe links which are antiferromagnetic. Actually, the magnitude of Fe -O -P -O -Fe is an open question and has been discussed by Gleitzer [4]; the neutron diffraction study of Fe(PO 3 ) 3 [18] and FeP 3 SiO 11 [19] confirmed the antiferromagnetic magnitude of these interactions. In order to verify these hypotheses, the neutron powder diffraction study of FePbP 2 O 7 is in progress.…”