We study palladium hydride nanowires of different sizes and hydrogen concentrations at 300 K using molecular dynamic simulations. Strong surface segregation of hydrogen with a depletion zone behind is observed in the palladium hydride nanowires. We also show that lattice reorientation is controlled by the hydrogen concentration as well as the nanowire size. The interplay of surface stresses and hydrogen induced stresses is responsible for the observations.
REFERENCES
1.
J.
Diao
, K.
Galla
, and M. L.
Dunn
, Nature Mater.
2
, 656
(2003
).2.
K.
Gall
, J.
Diao
, and M. L.
Dunn
, Nano Lett.
4
, 2431
(2004
).3.
H. S.
Park
, K.
Gall
, and J. A.
Zimmerman
, Phys. Rev. Lett.
95
, 255504
(2005
).4.
J. J.
Lao
and D.
Moldovan
, Appl. Phys. Lett.
93
, 093108
(2008
).5.
V. K.
Sutrakar
and D. R.
Mahapatra
, Appl. Phys. Lett.
97
, 146101
(2010
).6.
C.
Langhammer
, V. P.
Zhdanov
, I.
Zoric
, and B.
Kasemo
, Phys. Rev. Lett.
104
, 135502
(2010
).7.
B.
Ingham
, M. F.
Toney
, S. C.
Hendy
, T.
Cox
, D. D.
Fong
, J. A.
Eastman
, P. H.
Fuoss
, K. J.
Stevens
, A.
Lassesson
, S. A.
Brown
, and M. P.
Ryan
, Phys. Rev. B
78
, 245408
(2008
).8.
F.
Favier
, E. C.
Walter
, M. P.
Zach
, T.
Benter
, and R. M.
Penner
, Science
293
, 2227
(2001
).9.
P.
Offermans
, H. D.
Tong
, C. J. M.
van Rijn
, P.
Merken
, S. H.
Brongersma
, and M.
Crego-Calama
, Appl. Phys. Lett.
94
, 223110
(2009
).10.
X. W.
Zhou
, J. A.
Zimmerman
, B. M.
Wong
, and J. J.
Hoyt
, J. Mater. Res.
23
, 704
(2008
).11.
J. K.
Diao
, K.
Gall
, and M. L.
Dunn
, Nano Lett.
4
, 1863
(2004
).12.
J. K.
Diao
, K.
Gall
, M. L.
Dunn
, and J. A.
Zimmerman
, Acta Mater.
54
, 643
(2006
).13.
F. A.
Lewisa
, K.
Kandasamy
, and X. Q.
Tong
, Int. J. Hydrogen Energy
27
, 687
(2002
).14.
Y. H.
Wen
, Y.
Zhang
, and Z. Z.
Zhu
, Phys. Rev. B.
76
, 125423
(2007
).15.
H.
Gronbeck
and V. P.
Zhdanov
, Phys Rev. B
84
, 052301
(2011
).© 2012 American Institute of Physics.
2012
American Institute of Physics
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