Postprint version. Published in Physics Letters A, Volume 46, Issue 28, January 28, 1974, pages 369-370.
NOTE: At the time of publication, the author Richard B. Frankel was not yet affiliated with Cal Poly.
The definitive version is available at http://dx.doi.org/10.1016/0375-9601(74)90920-7.
Mössbauer spectroscopy of the three magnetic phases of single crystal FeCl2 · 2H2 in external magnetic fields at 4.2 K is reported.