scholarly journals Spin-Orbit Electric Field Gradient in Cubic Ferromagnets: Strong Magnetization-Direction Dependence of the Field Gradient Distribution

1999 ◽  
Vol 82 (5) ◽  
pp. 1024-1027 ◽  
Author(s):  
G. Seewald ◽  
E. Hagn ◽  
E. Zech ◽  
R. Kleyna ◽  
M. Voß ◽  
...  
Keyword(s):  
Electric Field ◽  
Electric Field Gradient ◽  
Field Gradient ◽  
Spin Orbit ◽  
Magnetization Direction ◽  
Gradient Distribution ◽  
Direction Dependence

A 57Fe Mössbauer study of Fe2As: a magnetically induced electric-field-gradient asymmetry

1985 ◽  
Vol 63 (12) ◽  
pp. 1540-1547 ◽  
Author(s):  
D. G. Rancourt ◽  
J. M. Daniels ◽  
H-Y. Lam
Keyword(s):  
Electric Field ◽  
Electric Field Gradient ◽  
Field Gradient ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Antiferromagnetic Phase ◽  
Mössbauer Study ◽  
Temperature Range ◽  
Time Period ◽  
Two Factors

The 57Fe Mössbauer spectrum of Fe2As has been measured in the temperature range 25–456 K. Evidence is found for two factors that affect the spectrum and that had been neglected in earlier investigations. These are (i) spin relaxation in a time period that is short compared with the characteristic Mössbauer measurement time and (ii) an anisotropy induced in the electric field gradient at the 57Fe nuclei, by the Weiss molecular field, via the spin orbit coupling. Taking these factors into account, we find that the Mössbauer spectra give consistent and physically reasonable parameters over the whole temperature range. There is also agreement with previous neutron-diffraction studies in that the spins in the antiferromagnetic phase are perpendicular to the c axis. The disagreements reported in earlier studies are seen to arise from a neglect of these factors.

Spin-orbit-induced electric-field gradient of Au in Ni

2003 ◽  
Vol 67 (13) ◽  
Author(s):  
G. Seewald ◽  
E. Zech ◽  
E. Hagn ◽  
H.-J. Körner ◽  
C. Tramm ◽  
...  
Keyword(s):  
Electric Field ◽  
Electric Field Gradient ◽  
Field Gradient ◽  
Spin Orbit

Spontaneous electric polarization and electric field gradient in hybrid improper ferroelectrics: insights and correlations

2021 ◽  
Author(s):  
Samuel Silva dos Santos ◽  
Michel L. Marcondes ◽  
Ivan P. Miranda ◽  
Pedro Rocha-Rodrigues ◽  
Lucy Vitória Credidio Assali ◽  
...  
Keyword(s):  
Electric Field ◽  
Electric Field Gradient ◽  
Ab Initio ◽  
Field Gradient ◽  
Electric Polarization ◽  
Double Perovskites

An ab-initio study for several hybrid improper ferroelectric (HIF) materials in the Ruddlesden-Popper phases and double perovskites structures is here presented. The focus is on the correlation between the electric...

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