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題名 Calorimetric studies of C14 and C15 YMn2 and YMn2(H,D)6
作者 陳洋元
Liu,R. S. ;Kuo,H. T. ;S. M. Filipek;R. Wierzbicki;R. Sato;Chen,Y. Y.
貢獻者 應物所
關鍵詞 YMn2;Hydrogen;Deuterization;Latent heat;Calorimetry
日期 2011
上傳時間 29-Sep-2014 15:07:21 (UTC+8)
摘要 The capacity of YMn2 to undergo reversible hydrogenization makes this compound a potential candidate for hydrogen storage. This report describes the successful synthesis of YMn2H6 from hexagonal C14 YMn2 as well as calorimetric studies of hexagonal C14 YMn2, cubic C15 YMn2 and their isostructural derivatives, YMn2H6 and YMn2D6. Complementary structural and physical property characterizations include X-ray diffraction, electrical resistivity, and magnetic susceptibility measurements. Of particular interest is a hysteretic first-order phase transition in C15 YMn2 near 100 K, which does not occur in C14 YMn2. Analysis of a specific heat anomaly that is associated with this transition reveals a substantial latent heat of 330 J/mol. No such anomalous specific heat exists in YMn2D6, suggesting that the transition is suppressed upon deuterization.
關聯 International Journal of Hydrogen Energy,36,2285-2290
資料類型 article
DOI http://dx.doi.org/10.1016/j.ijhydene.2010.11.037
dc.contributor 應物所en_US
dc.creator (作者) 陳洋元zh_TW
dc.creator (作者) Liu,R. S. ;Kuo,H. T. ;S. M. Filipek;R. Wierzbicki;R. Sato;Chen,Y. Y.en_US
dc.date (日期) 2011en_US
dc.date.accessioned 29-Sep-2014 15:07:21 (UTC+8)-
dc.date.available 29-Sep-2014 15:07:21 (UTC+8)-
dc.date.issued (上傳時間) 29-Sep-2014 15:07:21 (UTC+8)-
dc.identifier.uri (URI) http://nccur.lib.nccu.edu.tw/handle/140.119/70179-
dc.description.abstract (摘要) The capacity of YMn2 to undergo reversible hydrogenization makes this compound a potential candidate for hydrogen storage. This report describes the successful synthesis of YMn2H6 from hexagonal C14 YMn2 as well as calorimetric studies of hexagonal C14 YMn2, cubic C15 YMn2 and their isostructural derivatives, YMn2H6 and YMn2D6. Complementary structural and physical property characterizations include X-ray diffraction, electrical resistivity, and magnetic susceptibility measurements. Of particular interest is a hysteretic first-order phase transition in C15 YMn2 near 100 K, which does not occur in C14 YMn2. Analysis of a specific heat anomaly that is associated with this transition reveals a substantial latent heat of 330 J/mol. No such anomalous specific heat exists in YMn2D6, suggesting that the transition is suppressed upon deuterization.en_US
dc.format.extent 1094127 bytes-
dc.format.mimetype application/pdf-
dc.language.iso en_US-
dc.relation (關聯) International Journal of Hydrogen Energy,36,2285-2290en_US
dc.subject (關鍵詞) YMn2;Hydrogen;Deuterization;Latent heat;Calorimetryen_US
dc.title (題名) Calorimetric studies of C14 and C15 YMn2 and YMn2(H,D)6en_US
dc.type (資料類型) articleen
dc.identifier.doi (DOI) 10.1016/j.ijhydene.2010.11.037-
dc.doi.uri (DOI) http://dx.doi.org/10.1016/j.ijhydene.2010.11.037-