Strontium molybdate (SrMoO4) thin films with scheelite-structure were prepared directly on the metal molybdenum substrates by constant current electrochemical technique with emphasizing on the study of the growth characteristics of the films. The SEM images of the films deposited for the different time were carried out. It is found that the growth of SrMoO4 crystalline thin film by electrochemical method possesses special characteristics as follows: (1) The formation of the crystalline nucleuses needs a certain period of time, and the shape of the crystalline nucleuses is integrated at the beginning of the formation of the nucleuses; (2) The places where these crystalline nucleus and granules pile up and grow are those of the defects such as the fold, nick, disfigurement, and cave and convex inequality at the substrate; (3) The quantity and the size of the crystalline granules increase with the preparation time, the crystalline granules are dispersed gradually from sparseness to all over of the substrate; (4) The｛111｝faces of SrMoO4 crystals always appear during the growth; and (5) During the whole preparation process, the crystalline granule grows in the direction that its c axis is perpendicular to the surface of the substrate. It is sure that the results are of great significance for the research on the growth of crystals and crystalline films, especially for the research on the growth of crystals and crystalline films by electrochemical method. ?????(From Journal of Synthetic Crystals)

ZnO nanowires were successfully synthesized with the assistance of AgNO3 by a low-cost chemical vapor deposition (CVD) method. The ZnO nanowires were characterized and analyzed by FE-SEM, XRD, EDS and PL spectrum. The as-prepared ZnO nanowires were indexed to the wurtize structure. The average diameters of the ZnO nanowires were 50 nm and the lengths were 3-5μm. A violet emission around 421nm was observed besides the UV emission at room temperature. The vapor-liquid-solid mechanism is responsible for the growth of the ZnO nanwires. ???(From Journal of Synthetic Crystals)

As an important micro power supply, all solid-state thin film lithium battery which has a very high specific capacity and good cycle performance is attracting more and more attention. The research progresses in the all solid-state thin film lithium battery are reviewed in this paper. The preparation technology and development actualities of the positive material thin film are presented respectively, and the future development of the all solid-state thin film lithium battery is also expected.

Ferroelectric Pb1-xLax(Zr1-y,Tiy)1-x/4O3 thin films have excellent ferroelectric, dielectric, piezoelectricity and pyroelectricity properties, and a promising application prospect in the field of microelectronics. The research backgrounds, basic structures, preparation methods, characterizations of thin film properties, development of researches and applications are summarized in this article. The several important problems of the current researches of Pb1-xLax(Zr1-y,Tiy)1-x/4O3 thin films are also discussed in detail based on the acquired research results. ?(From Journal of Synthetic Crystals)

The carbon nanotube (CNT) is a kind of cold cathode material with excellent field emission performance. It has a low threshold electric field and a high emission current density which make it attractive for the potential application in the flat panel display. The Fowler-Nordhiems theory and the mechanism of CNT field emission are clarified in this paper. The effects on field emission characteristics of CNT by different factors, such as the structure of CNT, the orientation, structure, density of the CNT arrays, adsorbed gas, work environment and so on, are discussed in detail. Result shows that CNT arrays can have a sufficient field enhancement and excellent field emission performance as which is of vertical alignment, high ratio of length to diamenter, moderate density and clean surface. ??(From Journal of Synthetic Crystals)

Photon crystals are artificial materials with periodicity changing of refracting indexes or dielectric constant and with band gap of their energy levels. In this paper, the fundamental conception and principle characteristics, the development of research of preparatio methods and applications of the photon crystals were introduced.

(From Journal of Synthetic Crystals)