Talk:Chromium(IV) oxide

Production
"However, it is still used in data tape applications for enterprise-class storage systems" - citation(s) please. To my knowledge there is no more production since 2003. 46.115.6.76 (talk) 06:53, 22 August 2014 (UTC)

No Cigarettes?
Why no reference to this as a cigarettes additive?184.155.134.43 (talk) 01:56, 29 January 2015 (UTC)

Crystals or pseudomorphs ?
"The chromium dioxide crystals were perfectly formed", are the dioxide particles crystals (rutile structured compounds may well form needles) or are they pseudomorphs after the chromic acid? The iron oxide maghemite is used in magnetic tapes as needleshaped pseudomorphs after lepidocrocite) — Preceding unsigned comment added by 150.227.15.253 (talk) 12:20, 23 April 2015 (UTC) According to https://books.google.se/books?id=SAcgAHktmDwC&pg=PA5&lpg=PA5&dq=maghemite+magnetic+tape&source=bl&ots=OXgtX5ougg&sig=POtt0gwiF_e9fZsUSRP0lMzZkNE&hl=sv&sa=X&ei=a-Q4VenINsOUsAHi54DwDg&ved=0CDAQ6AEwADgK#v=onepage&q=maghemite%20magnetic%20tape&f=false it is a topotactic transformation meaning that the maghemite particles may be crystals (or a least have some type of epitaxial relation to the original lepidocrocite structure, although inheriting a pseudomorphic habit.

External links modified
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Introduction
" It is still considered by many oxide and tape manufacturers to have been one of the best magnetic recording particulates ever invented." - I think this calls for citation(s). Fritzfun (talk) 10:26, 26 April 2018 (UTC)