In situ measurement of elastic properties of PdHx, PdDx, and PdTx
In situ measurement of elastic properties of PdHx, PdDx, and PdTx
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DOI：
10.1016/s0925-8388(03)00269-x
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发表时间：
2003-08-11
影响因子：
6.2
通讯作者：
Contreras, S
中科院分区：
文献类型：
--
作者：
Fabre, A;Finot, E;Contreras, S
测量了氢化钯PdHx、氘化物PdDx和氚化物PdTx的杨氏模量E，以研究氢化学计量比x和同位素性质的影响。采用一种基于钯柱微悬臂梁弯曲模式的光学检测技术，在原位测量中保证了样品在弯曲过程中的均匀性。发现纯多晶钯和氢化物相之间的E降低了10%。观察到的非线性依赖与H含量进行了讨论的晶格膨胀，声子和电子性质。该技术的灵敏度使得能够区分同位素对E的影响。(C)2003 Elsevier B.V.保留所有权利。
The Young's modulus E of palladium hydride PdHx, deuteride PdDx and tritide PdTx were measured for studying the effect of both hydrogen stoichiometry x and isotope nature. A special technique based on optical detection of flexural modes of a palladium cylindrical microcantilever was adapted to in situ measurements to guarantee the sample homogeneity during the hydriding process. A 10% decrease in E was found between pure polycrystalline palladium and hydride phases. The non linear dependence observed with the H content was discussed in terms of lattice expansion, phonons and electronic properties. Sensitivity of the technique enables to distinguish an isotope effect on E. (C) 2003 Elsevier B.V. All rights reserved.