Spin dynamics in RENi5 ferromagnets byμSR measurements

Abstract

Spin dynamics in RENi5 ferromagnets by microSR measurementsGubbens, P.C.M.; Moolenaar, A.A.; de Reotier, P.D.; Yaouanc, A.; Kayzel, F.; Franse, J.J.M.; Prokes, K.; Snel, C.E.; Bonville, P.; Hodges, J.A.; Imbert, P.; Pari, P.

Muon-spin-relaxation study of the critical longitudinal spin dynamics in a dipolar Heisenberg ferromagnet

“…12 We define the Z axis as the axis parallel to S . We have used the flow cryostat and temperature controller ͑ITC503 from Oxford Instruments͒ of the spectrometer.…”

Rare Earth Mössbauer Spectroscopy Measurements on Lanthanide Intermetallics

“…Both hyperfine field and electric quadrupole splitting are equal for the two Tm sites. This phenomenon is ascribed to the interstitial carbon atoms, as shown by Gubbens et al (1994a). It may be seen from Fig.…”

“…The temperature dependence of m Fe (T ) is taken from the 57 Fe Mössbauer results of Gubbens et al (1989b). The influence of the B 2 2 O 2 2 is estimated to be zero (Gubbens et al, 1994a). At T ¼ 4 K, J z ¼ J so that the difference between the measured and the free ion value gives the lattice contribution of the quadrupole splitting using Eq.…”

Study of spin dynamics in NdRh2Si2 crystals byμSR relaxation measurements

“…This rate decreases slowly with the temperature as expected if the muon spin depolarisation is due to a two magnon (Raman) process. This process has already been identified in a wea.kly anisotropic ferromagnet [8]. In this case tz is proportionnal to T 2 ln(T) [4].…”

“…Each sample is a mosaic of single crystals as shown in Ref. [8]. The samples have been respectively grown and cut at the universities of Amsterdam and Leiden.…”