On the mechanism of the BCC-HCP transformations in small lennard-jones crystals

被引:8
作者
Krainyukova, N. V. [1 ]
机构
[1] Natl Acad Sci Ukraine, B Verkin Inst Low Temp Phys & Engn, UA-61103 Kharkov, Ukraine
关键词
crystal growth; phase transitions; supersolids;
D O I
10.1007/s10909-007-9547-y
中图分类号
O59 [应用物理学];
学科分类号
摘要
The structure relaxation of the initially body-centered cubic clusters to the most favorable configurations has shown that the transition to the hexagonal close-packed structure starts at the cluster surface and propagates to the cluster center. The intermediate orthorhombic structure was found and forms in application to helium the regions with delocalized atoms, which are presumably important in connection with the phenomenon of 'supersolidity'. The time to complete the transition depends on the cluster size and shape.
引用
收藏
页码:317 / 322
页数:6
相关论文
共 26 条
[1]   SHOULD ALL CRYSTALS BE BCC - LANDAU THEORY OF SOLIDIFICATION AND CRYSTAL NUCLEATION [J].
ALEXANDER, S ;
MCTAGUE, J .
PHYSICAL REVIEW LETTERS, 1978, 41 (10) :702-705
[2]  
ANDREEV AF, 1969, SOV PHYS JETP-USSR, V29, P1107
[3]  
BELL RJ, 1976, RARE GAS SOLIDS, V1, P154
[4]   Kinetics of the bcc-hcp transition in 4He off the melting curve [J].
Birchenko, A. P. ;
Vekhov, Ye. O. ;
Mikhin, N. P. ;
Polev, A. V. ;
Rudavskii, E. Ya. .
LOW TEMPERATURE PHYSICS, 2006, 32 (12) :1118-1122
[5]  
BRUNS CA, 2007, ABSTR QFS 07 S KAZ 1, P82
[6]   SPECULATIONS ON BOSE-EINSTEIN CONDENSATION AND QUANTUM CRYSTALS [J].
CHESTER, GV .
PHYSICAL REVIEW A, 1970, 2 (01) :256-&
[7]  
CLARK AC, 2006, ARXIVCONDMAT0610240, V9
[8]  
GLYDE HR, 1976, RARE GAS COLIDS, V1, P121
[9]   Why all crystals need not be bcc: Symmetry breaking at the liquid-solid transition revisited [J].
Groh, B ;
Mulder, B .
PHYSICAL REVIEW E, 1999, 59 (05) :5613-5620
[10]   Observation of superflow in solid helium [J].
Kim, E ;
Chan, MHW .
SCIENCE, 2004, 305 (5692) :1941-1944