Abstract
The coupled spin-lattice-bath system is investigated under conditions of microwave power saturation and the conditions for the existence of a steady-state nonthermal equilibrium phonon distribution are determined. The spin-lattice-bath equations are solved numerically for a few special cases involving a nonequilibrium distribution of phonons. The results of an experiment designed to detect the presence of nonequilibrium phonons are reported. No indication of the presence of such phonons was found. The experiments were performed using Cr 3+ impurities in MgO, Al 2O 3 and K 3Co(CN) 6 and at T = 4.2°K and 2°K. The sensitivity of the experiment was such that for ruby a phonon temperature rise of Δ T = 0.005 T could have been observed. Finally, the validity of the theory, in view of the experimental results, is discussed.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: 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.
