Juan de la Figuera

3 Questions 14 Answers 0 Followers

Questions related from Juan de la Figuera

What is the best Pt/Rh alloy composition to make a heating filament for an O2 atmosphere?

We want to make a heater for a sputtering system, where we will put Ar/O2 in order to grow oxides, with total pressure in the range of 10-3 torr or even higher. The heater will be a direct current...

10 September 2018 832 0 View

Can we use alumina crucibles for MBE of Fe?

We are using a high purity alumina crucible in a standard e-beam doser (we have Focus and home-made ones). We use Fe powder. The problem is that we are getting aluminum and oxygen on the surface,...

29 May 2013 9,815 14 View

Is there any experimental proof that magnetite is a half-metal (above the Verwey transition, i.e. in the cubic form)?

I am familiar with the published (conflicting) UPS experiments, and the surface reconstruction issues. Andreev reflection is out due to the Verwey transition. Is there anything out there?

12 February 2013 9,144 11 View