A Thermodynamic and Dynamic Model for Nuclear Quadrupolar Relaxation in Liquid Alloys*

Ott, K.; Haghani, M.A.; Kiehl, M.; Paulick, C. A.; Quitmann, D.

doi:10.1524/zpch.1988.156.part_2.635

Cited by 3 publications

(6 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…ForBi, however, acontributionABQcomparablewithAB,isobviousfrom . This case has been discussed in [9], where a concentration of about 10% of BiIn associates was estimated at cBI = 0.50. In In-Ni, associations may be suspected in the present systems, introducing an additional linewidth; however, at low concentrations of the association partner (here cN,/cIn), quadrupolar linewidths are observed to remain small 191.…”

Section: Linewidthsmentioning

confidence: 91%

“…In [8] the slope and plateaulike behaviour of K(Bi) and K(1n) were ascribed to the occurrence of an association Bi + In e InBi in the liquid alloy. The association ansatz is now in quantitative use for thermodynamics of liquid alloys (see, e.g., [24]), and it has recently been applied to many metallic liquid alloys, including Bi-In, to explain quadrupolar relaxation rates [9]. Note that the changes induced by the addition of Ni are of the same order of magnitude as those already occurring in the Bi-In system, i.e.…”

Section: Concentration Dependencementioning

confidence: 99%

“…The quadrupolar contribution to the linewidth (equation ( 6)) is probably small for In. The concentration dependence for In-Bi is linear, and AB(1n) increases with increasing temperature (from equation ( 6)) , whereas the quadrupolar ABQ would decrease with increasing T and be roughly of shape c(1 -c); also, according to [9], A B S 1 kHz. ForBi, however, acontributionABQcomparablewithAB,isobviousfrom .…”

Section: Linewidthsmentioning

confidence: 99%

“…Examples are the III-V systems, among which the case In-Bi shows relatively weak bonding (see e.g., [7]). Besides AHthe influence of the attractive interaction in the liquid state is also observeddepending on its strength-in the Knight shift [8], the susceptibility, the resistivity, the density, nuclear quadrupolar relaxation [9], and the temperature dependence of the Knight shift [ 101.…”

Section: Introductionmentioning

confidence: 99%

“…0953-89841891264223 + 12 $02.50 @ 1989 IOP Publishing Ltd added Ni has been thoroughly studied [2,3], and Bi-In shows definite effects of bonding in the liquid state [9], it was interesting to determine experimentally the changes in K for Bi and In in Bi-In liquid alloys on the addition of Ni.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Effects of magnetic impurity plus association on the Knight shifts in liquid Bi-In-Ni alloys

Şenel

Ploumbidis

Quitmann

1989

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

In liquid Bi-In-Ni alloys the dependences of the Bi Knight shift K(Bi) and the In Knight shift, K(In), respectively, on the concentrations as well as the linewidths. The concentration ranges were cNi=0-0.20, cBi=0-1 and cIn=0-1, at temperatures of 1000-1300 K. The addition of Ni increases K by Gamma =cNi-1. dK/K approximately=1 for In, and Gamma approximately=0.5 for Bi. The considerable nonlinear changes in K(Bi) and K(In) with cBi/cIn that are known to occur in the binary Bi-In system retain their general shapes on addition of Ni. The contribution of Ni d electrons to both Knight shifts has a large term proportional to cNi2, which is negative for K(In) and positive for K(Bi). The spin polarisation is evaluated. Changes in K in the ternary liquid alloy are compared with a superposition of the changes known from the binaries; at cNi approximately=0.20, deviations occur for K(In).

show abstract

Section: Linewidthsmentioning

confidence: 91%

Section: Concentration Dependencementioning

confidence: 99%

Section: Linewidthsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%