Isotope and temperature dependence of transition-metal shielding in complexes of the type M(XY)6

1987 ◽  
Vol 109 (9) ◽  
pp. 2589-2594 ◽  
Author(s):  
Cynthia J. Jameson ◽  
Dieter Rehder ◽  
Martin Hoch
Keyword(s):  
Transition Metal ◽  
Temperature Dependence

scholarly journals Erratum: ‘‘Temperature dependence of transition metal magnetism’’ [J. Appl. Phys. 67, 4552 (1990)]

1990 ◽  
Vol 68 (7) ◽  
pp. 3799-3799
Author(s):  
K. Schwartzman ◽  
E. J. Hartford ◽  
J. L. Fry
Keyword(s):  
Transition Metal ◽  
Temperature Dependence

PAC Studies of Ag-Hf Intermetallic Compounds

1996 ◽  
Vol 51 (5-6) ◽  
pp. 437-441 ◽  
Author(s):  
P. Wodniecki ◽  
B. Wodniecka ◽  
M. Marszałek ◽  
A. Z. Hrynkiewicz
Keyword(s):  
Transition Metal ◽  
Temperature Dependence ◽  
Intermetallic Compounds ◽  
Temperature Variation ◽  
Perturbed Angular Correlation ◽  
Transition Element ◽  
Tdpac Technique ◽  
Time Differential ◽  
Universal Correlation ◽  
Hyperfine Quadrupole Interaction

Abstract The hyperfine quadrupole interaction of 181Ta and 111Cd probes in HfAg and HfiAg com-pounds was studied at 24 to 1100 K with the time -differential perturbed angular correlation (TDPAC) technique. The EFGs measured in HfAg on 181Ta and 111Cd are 1.388(5)x1018 Vcm-2 and 0.340(5)x1018 Vcm -2 , respectively. For both probe atoms a linear decrease of the EFG with temperature was observed with slopes 1.11(2)x10-4 K-1 and 1.73(5)x10-4 K-1 for 181Ta and 111Cd, respectively. In Hf2 Ag, 0.469(2)x1018 Vcm-2 was determined on 181Ta nuclei and 0.428(5)x1018 Vcm-2 on 111Cd. Also a linear EFG temperature dependence with the large slope of 2.39(6)x10-4 K-1 was observed for 111Cd probes in Hf2Ag, while the EFG measured on 181Ta nuclei in this compound exhibits a very weak temperature variation which can be fitted neither with a linear T nor a T 3/2 dependence. In all cases the electronic contributions to the EFG are very small indicating that these transition element systems do not obey the universal correlation between the electronic and the ionic EFG observed in numerous other systems not belonging to the transition metal series.

Theory of Oscillatory Exchange Between Magnetic Layers Through a Nonmagnetic Transition–Metal Spacer

1991 ◽  
Vol 231 ◽  
Author(s):  
J. Mathon
Keyword(s):  
Transition Metal ◽  
General Theory ◽  
Fermi Surface ◽  
Temperature Dependence ◽  
Exchange Coupling ◽  
Asymptotic Decay ◽  
Close Analogy ◽  
Magnetic Layers ◽  
Spacer Layer

AbstractA general theory of oscillations in the exchange coupling between two transition metal ferromagnets separated by a nonmagnetic transition metal spacer is developed. A close analogy between oscillations in the exchange coupling and de Haas-van Alphen oscillations is established and exploited to show that the period, asymptotic decay, and temperature dependence of the oscillations are determined by properties of the d band Fermi surface in the spacer layer. The theory accounts qualitatively and even semiquantitatively for all the salient experimental features of the oscillations in the exchange coupling observed recently in Co/Ru, Co/Cr, and Fe/Cr superlattices.

Intramolecular reorientation, an electron spin relaxation process in solutions of discrete paramagnetic transition-metal complexes

1978 ◽  
Vol 31 (11) ◽  
pp. 2355 ◽  
Author(s):  
DM Doddrell ◽  
DT Pegg ◽  
MR Bendall ◽  
AK Gregson
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Temperature Dependence ◽  
Transition Metal Complexes ◽  
Spin Relaxation ◽  
Electron Spin ◽  
Potential Energy Profile ◽  
Methyl Proton ◽  
Electron Spin Relaxation ◽  
Time Modulation

Time modulation of the g-tensor by intramolecular reorientation between structurally equivalent molecular arrangements is postulated to dominate electron spin relaxation in solutions of some paramagnetic transition-metal complexes. The process is treated theoretically and it is shown that the resulting electron spin relaxation time depends on the correlation time for intramolecular reorientation. The temperature dependence of the nuclear T1 thus yields information concerning the potential energy profile for intramolecular reorientation. Experimental results on the field dependence of the temperature dependence of T1 of the methyl proton in Ru(acac)3 are in accord with the theory.

Temperature dependence of the magnetic properties of the rare-earth-transition-metal intermetallic Lu2Fe14C

1991 ◽  
Vol 96 (1-3) ◽  
pp. 219-222 ◽  
Author(s):  
Zhang Zhi-dong ◽  
X.K. Sun ◽  
Zhao Zhi-gang ◽  
Y.C. Chuang ◽  
F.R. de Boer
Keyword(s):  
Magnetic Properties ◽  
Rare Earth ◽  
Transition Metal ◽  
Temperature Dependence ◽  
The Rare Earth
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