Absolute values of surface and step free energies from equilibrium crystal shapes

被引:65
作者
Bonzel, HP [1 ]
Emundts, A [1 ]
机构
[1] Forschungszentrum Julich, Inst Grenzflachenforsch & Vakuumphys, D-52425 Julich, Germany
关键词
D O I
10.1103/PhysRevLett.84.5804
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
It is shown that exact images of the three-dimensional equilibrium shape of crystallites (ECS), recorded at several temperatures between 0.3 and 0.8 of the melting temperature of a solid, can be evaluated to yield absolute values of the surface and step free energies versus temperature, in addition to the formation energy of kinks. The essential input for this novel approach is the temperature variation of the size of a facet on the ECS and of the separation between the Wulff point and that particular facet. This approach promises access to surface free energies over a large temperature range and for well-defined low-index surface orientations.
引用
收藏
页码:5804 / 5807
页数:4
相关论文
共 34 条
[1]  
[Anonymous], 1987, CHEM PHYS SOLID SURF
[2]   Step energetics of Pb(111) vicinal surfaces from facet shape [J].
Arenhold, K ;
Surnev, S ;
Bonzel, HP ;
Wynblatt, P .
SURFACE SCIENCE, 1999, 424 (2-3) :271-277
[3]   Scanning tunneling microscopy of equilibrium crystal shape of Pb particles: test of universality [J].
Arenhold, K ;
Surnev, S ;
Coenen, P ;
Bonzel, HP ;
Wynblatt, P .
SURFACE SCIENCE, 1998, 417 (2-3) :L1160-L1165
[4]   ROUGHENING TRANSITION, SURFACE-TENSION AND EQUILIBRIUM DROPLET SHAPES IN A TWO-DIMENSIONAL ISING SYSTEM [J].
AVRON, JE ;
VANBEIJEREN, H ;
SCHULMAN, LS ;
ZIA, RKP .
JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL, 1982, 15 (02) :L81-L86
[5]   THE SURFACE-ENERGY OF ZINC [J].
BILELLO, JC ;
DEWHUGHES, D ;
PUCINO, AT .
JOURNAL OF APPLIED PHYSICS, 1983, 54 (04) :1821-1826
[6]   Island morphology and adatom self-diffusion on Pt(111) [J].
Boisvert, G ;
Lewis, LJ ;
Scheffler, M .
PHYSICAL REVIEW B, 1998, 57 (03) :1881-1889
[7]   STEP ENERGIES AND ENTROPIES, A COMPARISON OF EXPERIMENT AND THEORY [J].
BONZEL, HP .
SURFACE SCIENCE, 1995, 328 (03) :L571-L575
[8]  
DESJONQUERES MC, 1996, CONCEPTS SURFACE PHY, P136
[9]   SURFACE PHONON ENTROPY OF CRYSTALLINE LATTICES AT HIGH TEMPERATURES [J].
DOBRZYNSKI, L ;
FRIEDEL, J .
SURFACE SCIENCE, 1968, 12 (03) :469-+
[10]   Local structural and vibrational properties of stepped surfaces: Cu(211), Cu(511), and Cu(331) [J].
Durukanoglu, S ;
Kara, A ;
Rahman, TS .
PHYSICAL REVIEW B, 1997, 55 (20) :13894-13903