New Superconducting and Semiconducting Fe-B Compounds Predicted with an Ab Initio Evolutionary Search

New candidate ground states at 1:4, 1:2, and 1:1 compositions are identified in the well-known Fe-B system via a combination of ab initio high-throughput and evolutionary searches. We show that the proposed oP12-FeB2 stabilizes by a break up of 2D boron layers into 1D chains while oP10-FeB4 stabilizes by a distortion of a 3D boron network. The uniqueness of these configurations gives rise to a set of remarkable properties: oP12-FeB2 is expected to be the first semiconducting metal diboride and oP10-FeB4 is shown to have the potential for phonon-mediated superconductivity with a Tc of 15-20 K.Comment: 7 pages, 6 figure

Modelle für die Wachstumsraten von Chlorella vulgaris bei unterschiedlichen Photonenabsorptionsraten und Lichtspektren

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Characterization of the physical and engineering properties of the Aberjona wetland sediment

Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1995.Includes bibliographical references (p. 289-292).by Jason Lee Bialon.M.S