Epitaxial and non-epitaxial platinum, palladium and silver films on yttrium-stabilised zirconia

Epitaxial and non-epitaxial platinum, palladium and silver films on yttrium-stabilised zirconia
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钇稳定氧化锆上的外延和非外延铂、钯和银薄膜

DOI:
10.1016/j.matchemphys.2015.03.045
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发表时间:
2015
影响因子:
4.6
通讯作者:
R. Kmeth
R. Kmeth
中科院分区:
材料科学3区
文献类型:
--
作者:
G. Beck;C. Bachmann;R. Bretzler;R. Kmeth

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采用脉冲激光沉积(PLD)技术在不同取向的YSZ(钇稳定氧化锆)基片上制备了铂、钯和银薄膜。铂的沉积温度为200 ℃和400 ℃,而钯和银仅在200 ℃下沉积。薄膜的微观结构取决于特定的金属、衬底的取向和沉积温度。在400 °C下沉积的铂形成单晶、外延(111)、(311)和(110)取向以及(111)取向的多晶膜。在200 °C下沉积的铂、钯和银总是形成(111)取向的多晶膜,在某些情况下还具有一部分外延生长的晶粒。基于界面能和表面能最小化以及结构区模型,对形成的微观结构进行了讨论。
Platinum, palladium and silver films have been prepared on differently orientated YSZ (yttrium-stabilised zirconia) substrates by PLD (pulsed laser deposition). The deposition temperatures for platinum were 200 °C and 400 °C, whereas palladium and silver were deposited only at 200 °C. The microstructure of the films depends on the particular metal, on the orientation of the substrate and on the deposition temperature. Platinum – deposited at 400 °C – forms single crystalline, epitaxial (111), (311) and (110) orientated as well as (111) orientated polycrystalline films. Platinum, palladium and silver – deposited at 200 °C – always form (111) orientated and polycrystalline films, in some cases also with a fraction of epitaxial grown grains. The formed microstructures were discussed on the basis of interface and surface energy minimization and structure zone models.
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