Magnetic Coupling Constants of Self-Assembled CuII[3×3] Grids: Alternative Spin Model from Theoretical Calculations

2014 ◽  
pp. n/a-n/a ◽  
Author(s):  
Carmen J. Calzado ◽  
Nadia Ben Amor ◽  
Daniel Maynau
Keyword(s):  
Theoretical Calculations ◽  
Magnetic Coupling ◽  
Spin Model ◽  
Coupling Constants ◽  
Self Assembled

scholarly journals Mapping the Magnetic Coupling of Self-Assembled Fe3O4 Nanocubes by Electron Holography

Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 774 ◽  
Author(s):  
Lluís López-Conesa ◽  
Carlos Martínez-Boubeta ◽  
David Serantes ◽  
Sonia Estradé ◽  
Francesca Peiró
Keyword(s):  
Electron Microscope ◽  
Transmission Electron Microscope ◽  
Magnetic Induction ◽  
Theoretical Calculations ◽  
Magnetic Coupling ◽  
Magnetic Configuration ◽  
Electron Holography ◽  
Transmission Electron ◽  
Self Assembled ◽  
Good Agreement

The nanoscale magnetic configuration of self-assembled groups of magnetite 40 nm cubic nanoparticles has been investigated by means of electron holography in the transmission electron microscope (TEM). The arrangement of the cubes in the form of chains driven by the alignment of their dipoles of single nanocubes is assessed by the measured in-plane magnetic induction maps, in good agreement with theoretical calculations.

Merging multiconfigurational wavefunctions and correlation functionals to predict magnetic coupling constants

2007 ◽  
Vol 28 (16) ◽  
pp. 2559-2568 ◽  
Author(s):  
Ángel J. Pérez-Jiménez ◽  
José M. Pérez-Jordá ◽  
Ibério de P. R. Moreira ◽  
Francesc Illas
Keyword(s):  
Magnetic Coupling ◽  
Coupling Constants

scholarly journals Nuclear Response to Second-Order Isospin Probes in Connection to Double Beta Decay

Universe ◽  
2020 ◽  
Vol 6 (11) ◽  
pp. 217
Author(s):  
Francesco Cappuzzello ◽  
Manuela Cavallaro
Keyword(s):  
Charge Exchange ◽  
Theoretical Calculations ◽  
Nuclear Matrix Element ◽  
Quantitative Information ◽  
Mass Scale ◽  
Second Order ◽  
Double Beta Decay ◽  
Coupling Constants ◽  
Exchange Reactions ◽  
Double Charge

One of the key ingredients needed to extract quantitative information on neutrino absolute mass scale from the possible measurement of the neutrinoless double-beta (0νββ) decay half-lives is the nuclear matrix element (NME) characterizing such transitions. NMEs are not physical observables and can only be deduced by theoretical calculations. However, since the atomic nuclei involved in the decay are many-body systems, only approximated values are available to date. In addition, the value of the coupling constants to be used for the weak interaction vertices is still an open question, which introduces a further indetermination in the calculations of NMEs. Several experimental approaches were developed in the years with the aim of providing useful information to further constrain the theory. Here we give an overview of the role of charge exchange reactions in this scenario, focusing on second-order processes, namely the double charge exchange (DCE) reactions.

Experimental measurements and theoretical calculations of the chemical shifts and coupling constants of three azines (benzalazine, acetophenoneazine and cinnamaldazine)

2008 ◽  
Vol 46 (9) ◽  
pp. 859-864 ◽  
Author(s):  
Artur M. S. Silva ◽  
Regina M. S. Sousa ◽  
María Luisa Jimeno ◽  
Fernando Blanco ◽  
Ibon Alkorta ◽  
...  
Keyword(s):  
Theoretical Calculations ◽  
Chemical Shifts ◽  
Coupling Constants ◽  
Experimental Measurements

Effect of Hartree-Fock exact exchange on intramolecular magnetic coupling constants of organic diradicals

2015 ◽  
Vol 142 (2) ◽  
pp. 024318 ◽  
Author(s):  
Daeheum Cho ◽  
Kyoung Chul Ko ◽  
Yasuhiro Ikabata ◽  
Kazufumi Wakayama ◽  
Takeshi Yoshikawa ◽  
...  
Keyword(s):  
Magnetic Coupling ◽  
Coupling Constants ◽  
Hartree Fock ◽  
Exact Exchange

An Investigation of Long-range Proton–Proton Coupling Constants in Phenylacetylene Derivatives

1972 ◽  
Vol 50 (13) ◽  
pp. 2035-2040 ◽  
Author(s):  
C. J. MacDonald ◽  
G. K. Hamer ◽  
I. R. Peat ◽  
W. F. Reynolds
Keyword(s):  
Hyperfine Interaction ◽  
Long Range ◽  
Excellent Agreement ◽  
Quantitative Estimation ◽  
Theoretical Calculations ◽  
Experimental Results ◽  
Coupling Constants ◽  
Proton Proton ◽  
Proton Coupling

Signs and magnitudes of long-range coupling constants in three phenylacetylene derivatives have been determined. Values of the coupling constants are discussed in terms of the McConnell formulation and compared with results of MO–INDO–FPT calculations. Coupling constants are dominated by π contributions. Estimated values of hyperfine interaction constants for acetylene and methylacetylene groups are respectively QCC≡CH = −12 and QCC≡CCH = +12 G. The theoretical calculations are in excellent agreement with experimental results. Both approaches allow quantitative estimation of nine bond couplings in 4-vinylphenylacetylene.

Enhanced Magnetocaloric Effect Driven by Interfacial Magnetic Coupling in Self-Assembled Mn3O4–La0.7Sr0.3MnO3 Nanocomposites

2015 ◽  
Vol 7 (48) ◽  
pp. 26504-26511 ◽  
Author(s):  
Suresh K. Vandrangi ◽  
Jan-Chi Yang ◽  
Yuan-Min Zhu ◽  
Yi-Ying Chin ◽  
Hong-Ji Lin ◽  
...  
Keyword(s):  
Magnetocaloric Effect ◽  
Magnetic Coupling ◽  
Self Assembled
Sign in / Sign up

Export Citation Format

Share Document