The Mossbauer effect in the 100-keV 2+ ~ 0+ transition in W182 was observed with dilute t~ngsten in iron alloy absorbers with concentrations from 0.5-5.0 at.%W at 4.2°K. From the Zeeman spectra In external longitudinal magnetic fields, the g factor of the first excited 2+ state was found to be O.~2±0.O~, and the hyperfine field at tungsten nuclei in iron was found to be -708±25 kOe. The hyperfi...

Several observations of the Nb long-lived Mossbauer phenomena are presented, in consequence of an irradiation increased by an order of magnitude compared with previous work. These are 1) two β decays of 182Ta and 92mNb are enhanced, i.e., 182Ta is now 200 times faster than in previous results while 92mNb is twice as fast as normal; 2) γs emitted from two β decays compete to eject electrons in a...

Nickel ferrite nanoparticles 4 nm in size were synthesized by chemical deposition. Subsequent annealing at T=700 o C for 5 h led to an increase the particle 63 nm. The Mossbauer spectra and frequency-field dependences of ferromagnetic resonance have been measured. It has shown that freshly prepared powders are superparamagnetic room temperature. kinetic heating mode a frequency 8.9 GHz was foun...

High-field susceptibility XHF in Fe and Ni (at 4.2, 77, and 300 K) and high-field Mossbauer studies in Fe at 4.2°K are reported and related to the band structure of Fe and Ni and to band models of ferromag­ netism. The Mossbauer effect was employed to measure the change in the hyperfine field H n at the 57Fe nucleus with application of an external field. Assuming H n to be proportional to the b...