Hi,
I would like to calibrate the energy scales of our XPS system, and would like to receive recommendations of suppliers that sell highly pure Ag, Au and Cu foils (thickness greater than 20 nm).
I already contacted NPL, and they can send me the supplies, however, I would appreciate to receive other suggestions.
Also, I know that ISO 15472 describes the procedure well, but are there any other procedure from which one can follow?
Thanks in advance.
Dear Dr. Maria Magro,
I normally used, some yers ago, as XPS standard:
-Ag, foil, 0.1 mm thick, 99.9% -Au, foil, 0.1 mm thick, 99.9% Cu, foil, 0.25 mm thick, 99.98%
all by Aldrich Chemical.
Best regards, Pierluigi Traverso
I would strongly recommend to follow the procedures of the ISO whenever possible. I worked with a PHI Quantum XPS microprobe for a long time and checked the energy calibration according to ISO 15472. Due to the restrictions of the instruments hardware I am forced to modify some details of the ISO measurement procedures but try to be as close as possible to the ISO.
Details of my experience are documented in ‘U. Scheithauer, J. Electron Spectrosc. Relat. Phenom., 184 (2012) 542-546, DOI: 10.1016/j.elspec.2011.08.007'.
Dear Maria Magro,
'goodfellow' is a supplier for materials you need for scientific and industrial research and manufacturing:
https://www.goodfellow.com/
good luck
Hi,
You may make an inquiry at Alfa Chemistry, they offer kinds of materials.
https://www.alfa-chemistry.com/products/material-chemicals-6.htm
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