Browsing by Author "Zheng, Xiang"
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Chi, Ji; Zheng, Xiang; Rodriguez, Sergio Y.; Li, Yang; Gou, Weiping; Rathnayaka, K. D. D.; Ross, Joseph H. Jr. (American Physical Society, 2010)Fe2Al5 contains a Fe-Al matrix through which are threaded disordered one-dimensional chains of overlapping Al sites. We report magnetic, nuclear-magnetic-resonance (NMR), and specific-heat measurements addressing its ...
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Chen, Jing-Han; Sirusi Arvij, Ali; Zheng, Xiang; Rodriguez, Sergio Y.; Ross, Joseph H. Jr. (Elsevier, 2014)Ba8CuxGe46-x is a type-I clathrate material that forms as a semiconductor in a narrow composition range corresponding to the electron-balanced Zintl composition, with x = 5.3. We use NMR spectroscopy combined with ab initio ...
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Zheng, Xiang (2012-10-19)Increasing efforts have been put into research about thermoelectric materials for the last few decades, especially recently, faced with the crucial demand for new energy and energy savings. Among the potential candidates ...
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Zheng, Xiang; Rodriguez, Sergio Y.; Ross, Joseph H. (Physical Review B - Condensed Matter and Materials Physics, 2011)
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Zheng, Xiang; Rodriguez, Sergio Y.; Ross, Joseph H. Jr. (American Physical Society, 2011)Atomic motion of guest atoms inside semiconducting clathrate cages is considered an important source for glasslike thermal behavior. 69Ga and 71Ga nuclear magnetic resonance studies on type I Ba8Ga16Sn30 show a clear ...
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Zheng, Xiang; Rodriguez, Sergio Y.; Saribaev, Laziz; Ross, Joseph H. Jr. (American Physical Society, 2012)Anharmonic guest atom oscillation has direct connection to the thermal transport and thermoelectric behavior of type-I Ba8Ga16Sn30 clathrates. This behavior can be observed through several physical properties, with for ...