The structural and magnetic properties of rare-earth nanocomposite magnets of a (Nd,Dy)(Fe,Co,Nb,B)5.5 single layer and a (Nd,Dy)(Fe,Co,Nb,B)5.5/α-Fe multilayer prepared by sputtering and heat treatment have been investigated. Incomplete exchange coupling behaviour is observed in the Ti-buffered NdDyFeCoNbB + 40 wt%Fe single layer magnet. After annealing, the laminated nanostructure consisting ...

The influence of Co (Ni) and B co-doping on the structural, magnetic and magnetocaloric properties of (Mn,Fe) 2 (P,Si) compounds is investigated by X-ray diffraction (XRD), differential scanning calorimetry, magnetic and direct temperature change measurements. It is found that Co (Ni) and B co-doping is an effective approach to tune both the Curie temperature and the thermal hysteresis of (Mn,F...

The Mossbauer spectra of Fe in Fe3 _ xVx Si alloys for 0.,;; x";; I shows that V occupies almost exclusively one of two Fe sites (the B site). As x increases the spectra of Fe on the other site (the A, C site) becomes increasingly complex as the number of their V 1st neighbors increases. Simulated Mossbauer spectra were calculated using moments obtained by a simple model from bulk magnetization...

Each beta-protomer of the small betabeta subunit of Escherichia coli ribonucleotide reductase (R2) contains a binuclear iron cluster with inequivalent binding sites: Fe(A) and Fe(B). In anaerobic Fe(II) titrations of apoprotein under standard buffer conditions, we show that the majority of the protein binds only one Fe(II) atom per betabeta subunit. Additional iron occupation can be achieved up...

a Laboratorio de Tecnología Inmunológica, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Ciudad Universitaria, Paraje ‘‘El Pozo’’, Santa Fe, CP: 3000, Argentina b Servicio de Clínica Médica, Hospital J.B ‘‘Iturraspe’’, Bv. Pellegrini 3551, Santa Fe, CP: 3000, Argentina c Instituto de Inmunología, Facultad de Medicina, Universidad Nacional de Rosario, Santa Fe 31...

a Department of Pharmacy, Drug Clinical Area, Hospital Universitari i Politècnic La Fe and Instituto de Investigación Sanitaria La Fe, Valencia, Spain b Department of Radiology, Hospital Universitari i Politècnic La Fe, Valencia, Spain c Department of Pharmacy, Drug Clinical Area, Hospital Universitari i Politècnic La Fe, Valencia, Spain d Department of Radiology, Hospital Clínic, Barcelona, Spain

We have investigated the influence of multiple scattering on the magnetic small-angle neutron scattering (SANS) from a Nd-Fe-B nanocrystalline magnet. We performed sample-thickness- and neutron-wavelength-dependent SANS measurements, and observed the scattering vector dependence of the multiple magnetic scattering. It is revealed that significant multiple scattering exists in the magnetic scatt...

Colonization by Bordetella bronchiseptica results in a variety of inflammatory respiratory infections, including canine kennel cough, porcine atrophic rhinitis, and a whooping cough-like disease in humans. For successful colonization, B. bronchiseptica must acquire iron (Fe) from the infected host. A vast amount of Fe within the host is sequestered within heme, a metalloporphyrin which is coord...