Magnetic-Compton-scattering study of spin moments inUFe2

Magnetic Compton Scattering and Mössbauer Studies of an Itinerant Ferromagnet UFe2

“…[4,5]. The profile along the [1 1 1] direction in the present work was reproduced very well with the previous result [5]. The spin moments obtained in the present work is 0.47 ± 0.05 µ B , agreeing with the previous work, whether the contribution of the U 5f spin moments was taken into account of or not.…”

“…The measured sample is a single crystal. [4,5]. The profile along the [1 1 1] direction in the present work was reproduced very well with the previous result [5].…”

“…The neutron scattering suggests that the total magnetic moments on the U site is small, 0.01 µ B [4]. The neutron scattering and magnetic Compton scattering experiments suggest the cancellation of the spin and orbital moments at the U site [4,5]. However, the total magnetic moment estimated by 238 U Mössbauer spectroscopy is larger than the result of the neutron scattering [4,6].…”

“…The Fe magnetic moments were clearly observed as hyperfine magnetic field below the Curie temperature by 57 Fe Mössbauer spectroscopy [3]. On the other hand, the presence of the U magnetic moments in the ferromagnetic ordered state were also suggested by neutron scattering, 238 U Mössbauer spectroscopy and magnetic Compton scattering previously [4][5][6]. The neutron scattering suggests that the total magnetic moments on the U site is small, 0.01 µ B [4].…”

“…This means that the profiles show direction dependence as far as the wave functions are not spherical. If the profiles obtained in all the direction are identical, the analysis carried out in the previous work was appropriate [5]. In actinide compounds, this is a powerful tool free from surface effects in x-ray scattering because the high energy x-ray, which can penetrate most of samples, is used for the measurements.…”