Electric dipole and quasi-orbital magnetic moments of conduction electrons

1967 ◽  
Vol 10 (4) ◽  
pp. 320-321
Author(s):  
V. N. Genkin ◽  
P. M. Mednis
Keyword(s):  
Electric Dipole ◽  
Magnetic Moments ◽  
Conduction Electrons

Absence of Exchange Interaction Between Localized Magnetic Moments and Conduction-Electrons in Magnetic Ions Diluted in Ag-Nanoparticles

2011 ◽  
Vol 11 (3) ◽  
pp. 2126-2131 ◽  
Author(s):  
J. M. Vargas ◽  
W. Iwamoto ◽  
L. M. Holanda ◽  
S. B. Oseroff ◽  
P. G. Pagliuso ◽  
...  
Keyword(s):  
Exchange Interaction ◽  
Ag Nanoparticles ◽  
Magnetic Moments ◽  
Conduction Electrons ◽  
Magnetic Ions

Rare earth-rhodium-plumbides RE2Rh2Pb with RE = La–Nd, Sm, Gd and Tb

2018 ◽  
Vol 73 (12) ◽  
pp. 1015-1021 ◽  
Author(s):  
Lukas Heletta ◽  
Rainer Pöttgen
Keyword(s):  
Room Temperature ◽  
Magnetic Moments ◽  
Induction Melting ◽  
Temperature Dependent ◽  
X Ray ◽  
Conduction Electrons ◽  
Paramagnetic Behavior ◽  
Arc Melting ◽  
Intergrowth Structures

AbstractThe plumbides RE2Rh2Pb (RE = La–Nd, Sm, Gd, Tb) were synthesized in sealed niobium ampoules by induction melting of the pure elements or directly via arc-melting. The characterization of the samples by X-ray powder diffraction confirmed their Mo2B2Fe-type structure (space group P4/mbm) at room temperature. The Sm2Rh1.924Pb structure was refined from single-crystal X-ray diffractometer data: a=760.02(5), c=378.20(3) pm, wR=0.0387, 292 F2 values, 13 variables. The rhodium site shows small defects. The RE2Rh2Pb plumbides are simple 1:1 intergrowth structures of AlB2 and CsCl related slabs of compositions RERh2 and REPb. The Rh2 dumbbell in the SmRh2 slab of Sm2Rh2Pb shows a Rh–Rh distance of 281 pm. Temperature-dependent magnetic susceptibility measurements of La2Rh2Pb, Pr2Rh2Pb and Nd2Rh2Pb showed that the rhodium atoms carry no localized magnetic moments. La2Rh2Pb exhibits Pauli-paramagnetic behavior induced by the conduction electrons. The ground state of the praseodymium compound is ferromagnetic below TC=3.3 K while the neodymium compound shows a transition to an antiferromagnetic state at TN=6.1 K and a metamagnetic transition at a critical field of ca. 1000 Oe.

Absence of exchange interaction between localized magnetic moments and conduction-electrons in diluted Er3+ gold-nanoparticles

2014 ◽  
Vol 115 (17) ◽  
pp. 17E128
Author(s):  
G. G. Lesseux ◽  
W. Iwamoto ◽  
A. F. García-Flores ◽  
R. R. Urbano ◽  
C. Rettori
Keyword(s):  
Gold Nanoparticles ◽  
Exchange Interaction ◽  
Magnetic Moments ◽  
Conduction Electrons

LuGd: A system exhibiting positive exchange coupling between conduction electrons and localised magnetic moments

1978 ◽  
Vol 49 (3) ◽  
pp. 1440-1442 ◽  
Author(s):  
R. W. Cochrane ◽  
J. O. Ström‐Olsen ◽  
Gwyn Williams
Keyword(s):  
Exchange Coupling ◽  
Magnetic Moments ◽  
Conduction Electrons

The electric and magnetic moments of the neutron

1980 ◽  
Vol 290 (1043) ◽  
pp. 617-626 ◽  
Keyword(s):  
Dipole Moment ◽  
Electric Dipole ◽  
Cold Neutron ◽  
Magnetic Moments ◽  
Neutron Electric Dipole Moment ◽  
Oak Ridge ◽  
Fundamental Particles ◽  
Free Neutron ◽  
Ultra Cold Neutron ◽  
Dipole Length

It is well known that the free neutron decays spontaneously into a proton, an electron and an antineutrino, that it has a spin of 1/2 h and a negative magnetic moment, but very careful measurements have failed as yet to reveal any evidence for a finite electric charge or dipole moment. This paper contains a brief discussion of early work and more detail of recent experiments at the Institut Laue-Langevin (I.L.L.), Grenoble, which have shown that the neutron charge is probably less than 4 x 10 -20 electron charges (Bayreuth-Munich group), the neutron electric dipole moment (e.d.m.) is less than 1.5 x 10 -24 cm times the electron charge (Oak Ridge-Harvard-Sussex group), and the ratio of the neutron and proton magnetic moments is equal to — 0.68497 947(17), the uncertainty being only 0.25/10 6 (Harvard-Sussex-Oak Ridge group). The main features of the Leningrad experiments with ultra-cold neutrons, which have reduced the neutron electric dipole length to 7.5 x 10 -25 cm, are reported, with some details of the performance of the ultra-cold neutron magnetic resonance spectrometer now working at I.L.L. and the way it will be used to look for a neutron e.d.m. The paper concludes with some comments on the importance of the neutron moments to the development of the theory of fundamental particles.

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