Magnetic Compton scattering study of NpNiGa5

Tsutsui, Satoshi; Sakurai, Y.; Itou, M.; Aoki, Dai; Yamamoto, Etsuji; Homma, Yoshiya; Haga, Yoshinori; Nakamura, Akio; Shiokawa, Y.; Ōnuki, Yoshichika

doi:10.1016/j.jpcs.2007.08.050

Cited by 2 publications

(2 citation statements)

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“…It is interesting to note that the S value estimated from the magnetic Compton scattering becomes smaller in the HM state than in the LM state; 40,41 an opposite tendency to the present XMCD result. This implies a possible contribution of conduction-electron polarization to the spin magnetic moment 41 and also a possible difference in the values of R T = ͗T z ͘ / ͗S z ͘ between the LM and HM states.…”

Section: A Npcontrasting

confidence: 79%

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Element and orbital-specific observation of two-step magnetic transition inNpNiGa5: X-ray magnetic circular dichroism study

et al. 2009

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X-ray magnetic circular dichroism ͑XMCD͒ experiments were performed at the Np M 4,5 and the Ga K absorption edges of NpNiGa 5 to investigate the temperature-dependent changes of magnetic properties of Np 5f and Ga 4p electron states. By the sum-rule analysis of the Np M 4,5 XMCD data, the orbital magnetic moment L and the spin magnetic moment S were estimated for the Np 5f 3 and 5f 4 electronic configurations and their comparison to the previous magnetization and neutron-scattering experiments suggests that the 5f 4 configuration is more likely than the 5f 3 configuration in NpNiGa 5 . It was found that ͉ L / S ͉ tends to increase from the high-temperature low-moment ordered state to the low-temperature high-moment ordered state. The result of the Ga K XMCD indicates that the Ga 4p electrons are magnetically polarized and the temperature and magnetic-field dependences of the Ga 4p orbital moment are proportional to those of the magnetization measurements.

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Section: A Npcontrasting

confidence: 79%

“…This implies a possible contribution of conduction-electron polarization to the spin magnetic moment 41 and also a possible difference in the values of R T = ͗T z ͘ / ͗S z ͘ between the LM and HM states. Figures 3͑a͒ and 3͑b͒ show the Ga K XAS and XMCD spectra, respectively, of NpNiGa 5 at 5 K ͑the HM state͒.…”

Section: A Npmentioning

confidence: 99%