Evidence of strain and lattice distortion in lead sulfide nanocrystallites
作者:
S. B. Qadri,
J. P. Yang,
E. F. Skelton,
B. R. Ratna,
期刊:
Applied Physics Letters
(AIP Available online 1997)
卷期:
Volume 70,
issue 8
页码: 1020-1021
ISSN:0003-6951
年代: 1997
DOI:10.1063/1.118470
出版商: AIP
数据来源: AIP
摘要:
X-ray diffraction studies on nanometer sized lead sulfide particles reveal the presence of a compressive strain. A number of samples with particle sizes ranging from 2 to 16 nm were synthesized using the three dimensional periodic, bicontinuous cubic phase as a matrix. Samples of the larger size particles could be indexed to an fcc lattice. As the particle size decreased below 6 nm, a tetragonal distortion of the cubic lattice was observed, accompanied by a decrease in the unit cell volume. ©1997 American Institute of Physics.
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