The temperature dependence of the hyperfine interaction of the transition metal osmium in a gadolinium host matrix

1978 ◽  
Vol 29 (3) ◽  
pp. 223-230 ◽  
Author(s):  
M. Forker ◽  
P. Herzog ◽  
K. Kroth ◽  
H. Schuckel ◽  
W. Thomas
Keyword(s):  
Transition Metal ◽  
Hyperfine Interaction ◽  
Temperature Dependence ◽  
Host Matrix

scholarly journals MAPON Spectroscopy and Its Application to Transition Metal Ferromagnets

1998 ◽  
Vol 51 (2) ◽  
pp. 295 ◽  
Author(s):  
W. D. Hutchison ◽  
N. Yazidjoglou ◽  
D. H. Chaplin
Keyword(s):  
Transition Metal ◽  
Hyperfine Interaction ◽  
Frequency Domain ◽  
Electric Quadrupole ◽  
Magnetic Hyperfine ◽  
Adiabatic Passage ◽  
Future Studies ◽  
Radioactive Probe ◽  
Magnetic Hyperfine Interaction ◽  
Quadrupole Interactions

Modulated adiabatic passage on oriented nuclei (MAPON) is a technique developed specifically to measure very small electric quadrupole interactions (EQIs) at radioactive probe nuclei even when such interactions are masked in the frequency domain by inhomogeneous magnetic broadening associated with a dominant magnetic hyperfine interaction. In this paper an overview of the technique is presented with particular reference to 60CoCo EQI measurements which were an important step in establishing MAPON methodology. MAPON results for dilute nd impurities in ferromagnetic Fe and Ni metal hosts are reviewed including presentation of new data for 58CoNi and 60CoNi. Priorities for future studies are provided on the basis of this review.

scholarly journals Thermochromism of Highly Luminescent Photopolymer Flexible Films Based On Eu (III) Salts Confined in Polysulfone

Materials ◽  
2020 ◽  
Vol 13 (23) ◽  
pp. 5394
Author(s):  
Mani Outis ◽  
João Paulo Leal ◽  
Maria Helena Casimiro ◽  
Bernardo Monteiro ◽  
Cláudia Cristina Lage Pereira
Keyword(s):  
Thermal Stability ◽  
Ionic Liquid ◽  
Melting Point ◽  
Quantum Yield ◽  
Thermal Behavior ◽  
Temperature Dependence ◽  
Strong Temperature Dependence ◽  
Host Matrix ◽  
Flexible Films ◽  
First Time

Here we discuss the influence of two different cations on the emissive properties of the highly emissive [Eu(fod)4]− anion. The studied Eu(III) salts were [C16Pyr][Eu(fod)4] (1), and the previously reported [Chol][Eu(fod)4]. C16Pyr stands for N-cetylpyridinium, Chol for cholinium and fod for 1,1,1,2,2,3,3-heptafluoro-7,7-dimethyloctane-4,6-dionate. 1 is classified as ionic liquid, with melting point close to 60 °C, and presented a luminescence quantum yield of (ϕ) 100%. Ultrabright emissive photopolymers were obtained for the first time using polysulfone as the host matrix. The films were prepared with incorporation of 10% (w/w) of 1 and [Chol][Eu(fod)4] in the polymeric matrix, which improved its thermal stability. Additionally, the luminescence of CholEu(fod)4/PSU presented a strong temperature dependence with a ratiometric thermal behavior.

Electron-Nuclear Hyperfine Interactions of 53Cr 3+ in Mg2SiO4 (Forsterite)

1980 ◽  
Vol 35 (12) ◽  
pp. 1296-1303 ◽  
Author(s):  
H. Rager
Keyword(s):  
Transition Metal ◽  
Hyperfine Interaction ◽  
Metal Ions ◽  
Room Temperature ◽  
Hyperfine Interactions ◽  
Small Variation ◽  
Transition Metal Ions ◽  
Oxygen Sublattice ◽  
Oxygen Coordination ◽  
Nuclear Spin System

Abstract The magnetic hyperfine interaction between the electron and nuclear spin system of 53Cr3+ was studied at the Mg sites, M1 and M2, in Mg2SiO4. The study was undertaken at room temperature and 9.52 GHz. The hyperfine structure data exhibit a covalent Cr-O bonding of approximately 10% indicating a mainly but not purely ionic bonding. Including the corresponding results obtained for 57Fe 3+ [1] and 55Mn2+ [2] in Mg2SiO4, this is interpreted such that the bonding of transition metal ions is mainly dominated by the oxygen sublattice in Mg2SiO4 and less by the properties of the transition metal ions themselves. The small variation of the hyperfine splitting parameters found for 53Cr3+ at M1 and M2, and also for 57Fe3+ at these positions indicates that the hyperfine interaction varies also with varying average metal oxygen distances as well as with changes in the oxygen coordination size.

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

Pb3+-ions in CaWO4: Temperature dependence of hyperfine interaction

1976 ◽  
Vol 23 (4) ◽  
pp. 307-309 ◽  
Author(s):  
G. Born ◽  
A. Hofstaetter ◽  
A. Scharmann ◽  
B. Vitt
Keyword(s):  
Hyperfine Interaction ◽  
Temperature Dependence

Temperature Dependence of the Hyperfine Interaction at 181Ta in SrHfO3

2001 ◽  
Vol 159 (1) ◽  
pp. 1-6 ◽  
Author(s):  
Alberto López-Garcia ◽  
Patricia de la Presa ◽  
Alejandro Ayala
Keyword(s):  
Hyperfine Interaction ◽  
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.

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