The Hyperfine Field of Selenium in Iron and theMagnetic Dipole Moment of 75Se

Abstract

New results on the applied field dependence of the NMR of 75Se implanted in pure iron and oriented at millikelvin temperatures are reported. They yield the magnetic hyperfine field acting on Se nuclei present as dilute impurities in the iron matrix and the magnetic dipole moment of the 5/2+ ground state of 75Se with significantly improved precision. The results are Bhf(SeFe) =+67.9(10)T and |μ|(75Se) =0.683(10)μN. The improved value of the hyperfine field, with data from[2], gives the magnetic dipole moment of the 9/2+ ground state of 73Se as |μ|=0.892(13)μN.