نتایج جستجو برای: rare materials
تعداد نتایج: 671388 فیلتر نتایج به سال:
Rare-earth co-doping in inorganic materials has a long-held tradition of facilitating highly desirable optoelectronic properties for their application to the laser industry. This study concentrates specifically on rare-earth phosphate glasses, (R2O3)x(R'2O3)y(P2O5)(1-(x+y)), where (R, R') denotes (Ce, Er) or (La, Nd) co-doping and the total rare-earth composition corresponds to a range between ...
introduction: neonatal nasal airway obstruction induces various degrees of respiratory distress. the management of this disease, including surgical repair, will depend on the severity and location of the obstruction. we describe here a case of congenital nasal nostril stenosis that required surgical repair for stenting of both nares after coanal atresia repair. case report: a 2 days old femal...
The electronic structures and magnetic properties of many rare-earth monopnictides are reviewed in this article. Possible candidate materials for spintronics devices from the rare-earth monopnictide family, i.e. high polarization (nominally half-metallic) ferromagnets and antiferromagnets, are identified. We attempt to provide a unified picture of the electronic properties of these strongly cor...
This review deals with the definition and development of hard magnetic materials with special emphasis on more recent developments in this field. After discussing the fundamental properties of all hard magnetic materials, based on the intrinsic and extrinsic properties, some remarks on the history of hard magnetic materials and permanent magnets are given. The important hard ferrites are only b...
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