[asac][almanews] ALMA Memos 438 Released

[Stacy Oliver]

ALMA Memo #438

Measurements of Materials for SIS Mixer Magnetic Circuits

G. A. Ediss and K. Crady
National Radio Astronomy Observatory

2002/11/01

keywords:  magnetic materials, hysteresis measurements

Measurements have been made of various magnetic materials in order to
improve the flux density at the SIS junction positions in the mixer. 
The materials measured are Hiperco 50A, HyMu 80, Consumet iron and
Magnet iron.  Magnet iron is recommended for unannealed use.  Consumet
is recommended for annealed use.  Hiperco 50A can be used annealed if
large hysteresis can be accepted.  For highest flux density for lowest
drive current, annealed Consumet should be used.

View a pdf version of ALMA Memo #438.
http://www.alma.nrao.edu/memos/html-memos/alma438/memo438.pdf

Download a postscript version of ALMA Memo #438.
http://www.alma.nrao.edu/memos/html-memos/alma438/memo438.ps
_______________________________________________
Almanews mailing list
Almanews at listmgr.cv.nrao.edu
http://listmgr.cv.nrao.edu/mailman/listinfo/almanews