A series of Sm3Fe28.12xCoxMo0.9 compounds (x50,4,8,12,14,16) have been synthesized and their magnetic properties and structures investigated by means of x-ray diffraction and magnetic measurements. It is found that substitution of Co for Fe leads to a significant increase of the Curie temperature and saturation magnetization. Even more important, for x>14 the easy magnetization direction change...

The susceptibility and specific heat experimental results of the diluted magnetic semiconductors (DMS) are incorporated in a model based on short-range as well as long-range interaction in a random may of magnetic ions. The so-called nearestneighbor pair approximation (NNPA) is applied. It appears that the calculated values of zero field specific heat and Curie-Weiss temperature based on th...

In 1911, when the Nobel Foundation awarded its coveted Chemistry Prize to a 44 year old Polish born woman, it is likely they may not have expected the action ever duplicated in the more than 100 years that followed. In fact, it was the second Nobel Prize in the sciences awarded to Maria Sklodowska-Curie, whom the world would come to admire, know, and love as Madame Curie. In a time of science d...

1Hôpital Pitié-Salpêtrière, Université Pierre et Marie Curie (UPMC) Paris VI, Inserm, Paris, France; 2CNRS UMR 3348, Institut Curie, Université Paris Sud-11, Orsay, France; 3Institut Cochin, Université Paris Descartes, CNRS, Paris, France, 4Inserm, Paris, France; 5Hôpital Pitié-Salpêtrière, Service d’Hématologie Biologique, Paris, France; and 6CDR des Cordeliers, UPMC Paris VI, Inserm, Paris, F...

ALI SI-MOHAMED,* LAURENT ANDREOLETTI, ISABELLE COLOMBET, MARIE-PAULE CARRENO, GLADYS LOPEZ, GILLES CHATELIER, MICHEL D. KAZATCHKINE, AND LAURENT BELEC Laboratoire de Virologie, Hôpital Européen Georges Pompidou, INSERM Unité 430 and Université Pierre et Marie Curie (Université Paris VI), Hôpital Broussais, and Département de Statistiques, Université Pierre et Marie Curie, Paris, France, and Lab...