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The Characterization and Study of Physical Parameters of Ge Modified Se-Sn-Pb Chalcogenide System

New Journal of Glass and Ceramics 2013年第4期3卷 116-121页

作者： Prashant Kumar Vivek Modgil V. S. Rangra Department of Physics H. P. University Summer Hill Shimla India. Government Senior Secondary Boys School Lalpani Shimla India 2Department of Physics H. P. University Summer Hill Shimla India.

In the present paper, we have studied the effect of Ge addition on the physical properties of Se-Sn-Pb chalcogenide ma- terial. The necessary physical parameters which have important role in determining the structure and strength of the material viz. constraints, coordination number etc. have been calculated. The increasing trend has been found in cohesive energy, heat of atomization and mean bond energy. The glass transition has been studied using the Tichy-Ticha and Lankhorst approaches, which also increases with the increasing Ge contents. The increase in these physical parameters is due to the increasing covalent character in the material.

关键词： Quaternary Chalcogenide Glasses Heat of Atomisation Mean Bond Energy Glass Transition tempera-ture SEM

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temperature and Magnetic Resonance Characteristics of Zinc, Manganese, Gadolinium, Gold, Iron Magnetic Nanoparticles and Cytokine Synergy in Hyperthermia

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Journal of Biomedical Science and Engineering 2008年第3期1卷 182-189页

作者： Saleh S. Hayek Rakesh Sharma Soonjo Kwon Avdhesh Sharma Ching J.Chen Center for Nanomagnetics and Biotechnology Florida State University Tallahassee Center for Nanomagnetics and Biotechnology Florida State University Tallahassee FL Department of Biological Engineering Utah State University Logan UT 84322. Nanotechnology Division Electrical Engineering Department MP University of Agriculture and Technology Udaipur Rajasthan India

The temperature and magnetic moment depend-ence for assessing localized heating utilizing a new class of Manganese-Zinc-Gadolinium mag-netic nanoparticles was studied. These particles showed heating effect when subjected to alter-nating filed. Alternatively, a new approach was used to get disperse heating without spot heating by using the synthesis of particles at controlled Curie temperature of less than 44oC. The study reports a simple synthesis of Mn0.5Zn0.5GdxFe(2-x)O4 nanoparticles using chemical co- precipita-tion technique. The particles exhibited Curie temperature of 42篊 and high magnitude of mag-netic moments. The particles showed sigmoid behavior of dependence between temperature and magnetic moments. The Nuclear Magnetic Resonance spectroscopy showed T1 depend-ence on temperature in the range of 10-45篊. The particles may have high promise for self con-trolled magnetic hyperthermia application and its monitoring.

关键词： hyperthermia nanoparticles tempera-ture imaging

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