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Full-Text Articles in Physics
Magnetic And Structural Properties Of Mg–Co Nanostructures Fabricated, E.M. Kirkpatrick, Diandra Leslie-Pelecky, S.-H. Kim, R.D. Rieke
Magnetic And Structural Properties Of Mg–Co Nanostructures Fabricated, E.M. Kirkpatrick, Diandra Leslie-Pelecky, S.-H. Kim, R.D. Rieke
Diandra Leslie-Pelecky Publications
Reductive chemical synthesis is a versatile tool for fabricating elemental nanostructures; however, less work has been completed on understanding and controlling alloy formation. Magnetic Mg–Co and Mg–Co–C nanocomposites have been fabricated using a reductive chemical synthesis designed to produce highly active metals. The as-synthesized powder was annealed at temperatures from 150 to 650 °C. Samples were investigated using x-ray diffraction, alternating gradient force magnetometry, and superconducting quantum interference device magnetometry. X-ray diffraction indicates that the resulting structures are multiphase with MgCo2, MgCo3C0. 5, fcc Co, Mg, MgO, and Li2CO3 present depending on …
Effect Of Disorder On The Magnetic Properties Of Smco5, Diandra Leslie-Pelecky, R.L. Schalek
Effect Of Disorder On The Magnetic Properties Of Smco5, Diandra Leslie-Pelecky, R.L. Schalek
Diandra Leslie-Pelecky Publications
Mechanical milling of initially ordered ferromagnetic SmCo5 produces dramatic increases in coercivity after short (15 min to 1 h) milling times, accompanied by remanence ratios on the order of 0.7 and shifted hysteresis loops. X-ray diffraction shows that milling induces both chemical and structural disorder. The hysteresis-loop shift is continuous and nonlinear with temperature over the range 5–300 K. The high coercivities are attributed to the formation of a nanostructure consisting of crystalline SmCo5 regions separated by a disordered interphase.
Scienceworks: A University-Based Science Outreach Group, Rochelle Payne Ondracek, Diandra Leslie-Pelecky
Scienceworks: A University-Based Science Outreach Group, Rochelle Payne Ondracek, Diandra Leslie-Pelecky
Diandra Leslie-Pelecky Publications
ScienceWorks is a science and engineering outreach group at the University of Nebraska- Lincoln, comprised of faculty, graduate students, undergraduates and community volunteers. We are brought together by one goal - to make science fun and accessible for everyone. ScienceWorks has developed over 30 modules that emphasize a range of scientific and engineering topics and guide the participants in discovery-based learning. Modules cover a wide variety of topics, including pressure, materials, electromagnetism, archaeology, DNA, optics and fracture. Most ScienceWorks modules involve hands-on activities. In Electromagnetism for example, students are asked to use a length of wire and a nail to …