Abstract
Solid solutions grown from the ternary system NH4Cl–MnCl2–H2O with Mn2+ concentrations up to 8% by weight show a change of structure from cubic to tetragonal in the vicinity of 4% Mn2+. Electron spin resonance at X band shows an extraordinarily complex spectrum for the series, and a change in hyperfine structure intensity with change of structure. Previous workers have shown by x-ray diffraction that the tetragonal phase, which occurs at high concentrations of manganese, is due to ordered arrangement of NH4Cl double cells in which the manganese ion is interstitial. It is deduced from the electron spin resonance results that the double cell structure also holds at low concentrations, the bcc phase shown by x-ray diffraction being due to a lack of order among such double cells. A Q-band spectrum yields an exceptionally large axial parameter D=0.150 cm—1, and a small cubic parameter a=2.8×10—4 cm—1 in the spin Hamiltonian.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.