content_image/371494.jpg content_image/371497.jpg content_image/371499.jpg
<img src='content_image/371494.jpg'>

This indicates an epitaxial relationship between the substrate and the borocarbide in the following way: 

<img src='content_image/371497.jpg'>

In agreement with the results of Fig. 2, the intensity of the borocarbide (112) peak is strongly enhanced for higher deposition temperatures while a full width of half maximum (FWHM) of the phi scan of about 2 ° is almost preserved. It should be noted further at this place that also the Lu$_{2}$O$_{3}$ interface layer has an epitaxial relationship to the substrate, which can be described as 

<img src='content_image/371499.jpg'>

A further improvement of the film quality was achieved using lower laser repetition rates. LuNi$_{2}$B$_{2}$C films with the best out–of–plane and in–plane texture were prepared with a frequency of 5 Hz under slightly optimized conditions. In Fig. 4, a phi scan of the (112) pole of such the sample is shown: The FWHM is about 1 ° only, which is the lowest value reported so far on borocarbide thin films. The out–of–plane alignment has a FWHM value about 2.5 ° (not shown). Taking into account the low background signal, these data testify an extremely high in-plane order achieved under these optimized deposition conditions compared to earlier 

