𝔖 Bobbio Scriptorium
✦   LIBER   ✦

The effect of flake size on the Mössbauer spectrum of graphite ferrous chloride

✍ Scribed by J.G. Hooley; J.R. Sams; B.V. Liengme

Publisher
Elsevier Science
Year
1970
Tongue
English
Weight
458 KB
Volume
8
Category
Article
ISSN
0008-6223

No coin nor oath required. For personal study only.

✦ Synopsis

The thermal decomposition of graphite ferric chloride produces graphite ferrous chloride with two quadrupole splittings for iron. One of these is the same as the single splitting in bulk FeCl,. The other is larger and has an intensity, relative to the normal splitting, which increases with flake thickness. Both have the same isomer shift as in bulk FeCl,. The extra doublet is believed to be caused by the presence of Cl, trapped in certain spaces in the flake. This modifies the electric field gradient of the FeCl, in those regions. The normal doublet is believed to come from FeCI, in layer spaces containing no trapped Clz. Both the Mossbauer and analytical data show that the thermal stability of FeCl, intercalated between the carbon layers IS less than that of bulk FeCl,.

📜 SIMILAR VOLUMES

The effect of flake thickness on the int
The effect of flake thickness on the intercalation of graphite
✍ J.G. Hooley 📂 Article 📅 1972 🏛 Elsevier Science 🌐 English ⚖ 593 KB

The peripheral expansion of single flakes of natural graphite 0-5 to 3 mm in diameter has been measured during intercalation by solutions of 12 metal chlorides in nitromethane (NM) and by ICI and by H2SO4. As concentration is decreased and thickness is increased the percentage expansion decreases. A

A57fe Mössbauer spectroscopic study of t
A57fe Mössbauer spectroscopic study of the ternary system graphite-ferric chloride-potassium
✍ M.J. Tricker∗; E.L. Evans; P. Cadman; N.C. Davies; B. Bach 📂 Article 📅 1974 🏛 Elsevier Science 🌐 English ⚖ 313 KB

The Mossbauer spectrum of CTFeCl, has been reexamined at room temperature and is in good agreement with previous studies. The spectrum at 4.2 K of the intercaiate shows no sign of magnetic ordering which is observed below 15 K for Fe&, Reaction of graphite-ferric chloride with potassium results in t

Mössbauer study of the effects of anneal
Mössbauer study of the effects of annealing on tempered tool steel
✍ S. Nagy; K. Romhányi; A. Vertes; E. Kuzmann; Z. Hegedüs 📂 Article 📅 1983 🏛 Elsevier Science ⚖ 466 KB

The effect of annealing on the paramagnetic and ferromagnetic phases of tempered tool steel was studied by Mbssbauer spectroscopy as a function of the annealing parameter. The quantity of the paramagnetic materials first decreased due to the decompositioh of austenite. After the minimum, the percent