Internal Fields at Nuclei of Several Impurities in Ferromagnetic Fe, Co and Ni Alloys. II

Kontani, Masaaki; Itoh, Junkichi

doi:10.1143/jpsj.22.345

Cited by 164 publications

(25 citation statements)

References 3 publications

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“…The remarkable deviation from the hyperfine field derived from the spin echo experiment [20] is discussed in the last chapter.…”

Section: Tdpac-measurement Of the Spinmentioning

confidence: 92%

“…The hyperfine field of WF_~e is well known for T =4K from a spin echo experiment [20] with the stable nucleus 183W, the magnetic moment of which is precisely known [21]. The hyperfine field recalculated with the latest value for the moment is B~f(WFe) = -62.7 (I 3) T.…”

Section: G-factor Measurementsmentioning

confidence: 99%

“…It cannot be caused by different types or amounts of impurities in the probes used in these two experiments because of the following reasons: Kontani and Itoh [20] have carefully investigated the influence of the tungsten concentration on the spin echo spectrum. The main resonance peak remained unchanged for concentrations of the impurity W up to 3.6 at.…”

Section: B(e2 4+-~2+)/b(e2mentioning

confidence: 99%

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Gyromagnetic ratios of the 4+ and 6+ rotational states of184W

et al. 1982

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“…The remarkable deviation from the hyperfine field derived from the spin echo experiment [20] is discussed in the last chapter.…”

Section: Tdpac-measurement Of the Spinmentioning

confidence: 92%

Section: G-factor Measurementsmentioning

confidence: 99%

Section: B(e2 4+-~2+)/b(e2mentioning

confidence: 99%

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Gyromagnetic ratios of the 4+ and 6+ rotational states of184W

et al. 1982

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“…By inserting for the g-factor of the 2 + state the average value of the most reliable data published for IPAC and integral perturbed angular distribution (IPAD) measurements with external magnetic fields we obtained a hyperfine field for ~84W2+ F e* which was by more than 10% larger than that known from spin echo experiments with 18aWgF__ee [2]. As was mentioned in [1] this difference may be explained by the Bohr-Weisskopf effect [-3J although it is astonishingly large.…”

Section: Introductionmentioning

confidence: 76%

Gyromagnetic ratio of the 2+ rotational state of184W and observation of a large hyperfine anomaly with respect to183Wg in iron

et al. 1984

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The g-factor of the 2 + rotational state of 184W was redetermined by an IPAC measurement in an external magnetic field of 9.45 (5)T as: g2+ (184W) = + 0.289 (7).In the evaluation the remeasured half-life of the 2 + state: T1/2 (2 +) = 1.251 (12) ns was used. TDPAC-measurements with a sample of carrierfree 184Re in high purity iron gave the hyperfine fields: A comparison with the hyperfine field known from a spin echo experiment with lS3WgFe leads to the hyperfine anomaly:184W2+ A 183Wg= +0.145(36).The hyperfine splitting observed in a M6ssbauer source experiment with another sample of carrierfree 184"Re in high purity iron indicates that the smaller splitting, measured previously by a M6ssbauer absorber experiment is due to the high tungsten concentration in the absorber. The new value for the g-factor of the 2 + state together with the result of the M6ssbauer experiment allow an improved calibration for our recent investigation of the gR-factors of the 4 + and 6 + rotational states. A detailed investigation of the attenuation of Y-? angular correlations in liquid sources of lS~Re and aS4mRe revealed the reason for erroneous results of early measurements of the 2--gR-factor: The time dependence of the perturbation is not of a simple exponential type. It contains an unresolved strong fast component.

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“…The hyperfine field of PtNi had already been determined with spin-echo NMR on stable 195 Pt, 33 but no investigation of the SO-EFG was possible because I( 195 Pt) ϭ1/2.…”

Section: Ptnimentioning

confidence: 99%

Spin-orbit induced noncubic charge distribution in cubic ferromagnets. I. Electric field gradient measurements on5dimpurities in Fe and Ni

et al. 2002

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The spin-orbit induced electric field gradient at the nuclear site of 183 Os and 183 Re impurities in Fe and of 191 Pt and 186 Ir impurities in Ni was determined for ͓100͔, ͓110͔, and ͓111͔ orientations of the magnetization. The measurements were performed on single-crystal samples using nuclear magnetic resonance on oriented nuclei and modulated adiabatic fast passage on oriented nuclei. In the Ni experiments the electric field gradient was also determined for other orientations of the magnetization in the ͑110͒ plane. These data, together with previous results on the 5d impurities, provide the first fairly complete data set on the spin-orbit induced electric field gradient in cubic Fe, Co, and Ni. Our results establish in particular that the effect depends in general considerably on the direction of the magnetization. We summarize the present knowledge of these electric field gradients, their magnitude, their systematics, and the form and magnitude of their dependence on the direction of the magnetization. The properties of the effect are explained within the tight-binding model in terms of the spin-orbit induced deformation of the electron distribution. We also present and discuss data on the dependence of the hyperfine field on the direction of the magnetization, which was found to be smaller than 10 Ϫ3 , and on the inhomogeneous broadening of the electric field gradient.

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Internal Fields at Nuclei of Several Impurities in Ferromagnetic Fe, Co and Ni Alloys. II

Cited by 164 publications

References 3 publications

Gyromagnetic ratios of the 4+ and 6+ rotational states of184W

Gyromagnetic ratios of the 4+ and 6+ rotational states of184W

Gyromagnetic ratio of the 2+ rotational state of184W and observation of a large hyperfine anomaly with respect to183Wg in iron

Spin-orbit induced noncubic charge distribution in cubic ferromagnets. I. Electric field gradient measurements on5dimpurities in Fe and Ni

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