Zhenyu YUAN
材料科学技术（英文）
The superelastic properties of NiTi thin films prepared with sputtering were studied. To characterize their superelasticity, tensile and bulging and indentation tests were performed. The measured mechanisms using these three methods were compared, and the factors that influence superelasticity were described.
关键词:
Shape memory alloy
,
memory
,
alloy
,
NiTi
,
thin
,
film
,
Super
Li′na CHENG
材料科学技术（英文）
Microstructural characteristics in the BaSrNb0:3Ti0:7O3 thin film, grown on SrTiO3 substrate by computercontrolled laser molecular beam epitaxy, were characterized by means of transmission electron microscopy (TEM). It is found that the film is single-crystallized and epitaxially grown on the SrTiO3 substrate forming a flat and distinct interface. Anti-phase domains were identified, and the crystallographic features of mismatch dislocations at the interface between film and substrate were clarified. The high conductivity of the present film was discussed from the viewpoint of Nb dopant and the nitrogen atmosphere.
关键词:
BaSrNb0.3Ti0.7O3 thin film
,
thin
,
film
,
epitaxial
,
gro
武怡
,
高斐
,
刘生忠
,
马笑轩
,
王浩石
,
宋飞莺
,
陈彦伟
材料导报
利用化学浴沉积法在玻璃衬底上50℃沉积3h制备硫化铅(PbS)纳米晶薄膜.将得到的PbS薄膜在300℃氮气中进行不同时间(0～120min)的退火.利用X射线衍射仪(XRD)、扫描电子显微镜(SEM)、原子力显微镜(AFM)和紫外-可见-近红外分光光度计对PbS薄膜的结构和光学特性进行研究.PbS薄膜在玻璃基底上粘附力较强,结晶度良好,呈面心立方结构且沿(111)方向择优生长.不同的退火时间导致PbS薄膜的结构、形貌、光学特性均产生明显差异.退火30 min的PbS薄膜的结晶度最好,其带隙变化范围为0.90～1.70 eV.
关键词:
PbS薄膜
,
化学浴沉积
,
薄膜结构
,
光学特性
