Magnetic domain state and anisotropy in hematite ( α ‐Fe 2 O 3 ) from first‐order reversal curve diagrams

2021 ◽  
Author(s):  
Andrew P. Roberts ◽  
Xiang Zhao ◽  
Pengxiang Hu ◽  
Alexandra Abrajevitch ◽  
Yen‐Hua Chen ◽  
...  
Keyword(s):  
Magnetic Domain ◽  
First Order ◽  
Domain State

scholarly journals Magnetic Domain State Diagnosis in Soils, Loess, and Marine Sediments From Multiple First-Order Reversal Curve-Type Diagrams

2018 ◽  
Vol 123 (2) ◽  
pp. 998-1017 ◽  
Author(s):  
P. X. Hu ◽  
X. Zhao ◽  
A. P. Roberts ◽  
D. Heslop ◽  
R. A. Viscarra Rossel
Keyword(s):  
Marine Sediments ◽  
Magnetic Domain ◽  
First Order ◽  
Curve Type ◽  
Domain State ◽  
State Diagnosis

scholarly journals Inferences on the Magnetic Domain State of Leg 37 Basalts

1977 ◽  
Author(s):  
G.S. Murthy ◽  
E.R. Deutsch ◽  
R.R. Patzold
Keyword(s):  
Magnetic Domain ◽  
Domain State

FIRST-PRINCIPLES CALCULATIONS OF CURRENT-INDUCED SPIN-TRANSFER TORQUES IN MAGNETIC DOMAIN WALLS

2013 ◽  
Vol 27 (12) ◽  
pp. 1350092 ◽  
Author(s):  
LING TANG ◽  
ZHIJUN XU ◽  
ZEJIN YANG
Keyword(s):  
First Principles ◽  
Domain Walls ◽  
Order Term ◽  
Tight Binding ◽  
Magnetic Domain ◽  
Spin Transfer ◽  
Third Order ◽  
First Order ◽  
Local Spin ◽  
Magnetic Domain Walls

Current-induced spin-transfer torques (STTs) have been studied in Fe , Co and Ni domain walls (DWs) by the method based on the first-principles noncollinear calculations of scattering wavefunctions expanded in the tight-binding linearized muffin-tin orbital (TB-LMTO) basis. The results show that the out-of-plane component of nonadiabatic STT in Fe DW has localized form, which is in contrast to the typical nonlocal oscillating nonadiabatic torques obtained in Co and Ni DWs. Meanwhile, the degree of nonadiabaticity in STT is also much greater for Fe DW. Further, our results demonstrate that compared to the well-known first-order nonadiabatic STT, the torque in the third-order spatial derivative of local spin can better describe the distribution of localized nonadiabatic STT in Fe DW. The dynamics of local spin driven by this third-order torques in Fe DW have been investigated by the Landau–Lifshitz–Gilbert (LLG) equation. The calculated results show that with the same amplitude of STTs the DW velocity induced by this third-order term is about half of the wall speed for the case of the first-order nonadiabatic STT.

Reliable absolute palaeointensities independent of magnetic domain state

2006 ◽  
Vol 248 (1-2) ◽  
pp. 508-517 ◽  
Author(s):  
Mark J. Dekkers ◽  
Harald N. Böhnel
Keyword(s):  
Magnetic Domain ◽  
Domain State

Inferences on the magnetic domain state of leg 37 basalts

1976 ◽  
Vol 81 (23) ◽  
pp. 4199-4206 ◽  
Author(s):  
G. S. Murthy ◽  
E. R. Deutsch ◽  
R. R. Pätzold
Keyword(s):  
Magnetic Domain ◽  
Domain State

scholarly journals Femtoscale Magnetically Induced Lattice Distortions in Multiferroic TbMnO3

Science ◽  
2011 ◽  
Vol 333 (6047) ◽  
pp. 1273-1276 ◽  
Author(s):  
H. C. Walker ◽  
F. Fabrizi ◽  
L. Paolasini ◽  
F. de Bergevin ◽  
J. Herrero-Martin ◽  
...  
Keyword(s):  
Magnetic Order ◽  
Magnetic Domain ◽  
Substantial Contribution ◽  
Zero Field ◽  
Long Range Order ◽  
X Ray ◽  
X Ray Scattering ◽  
Domain State ◽  
Competing Models ◽  
Lattice Distortions

Magneto-electric multiferroics exemplified by TbMnO3 possess both magnetic and ferroelectric long-range order. The magnetic order is mostly understood, whereas the nature of the ferroelectricity has remained more elusive. Competing models proposed to explain the ferroelectricity are associated respectively with charge transfer and ionic displacements. Exploiting the magneto-electric coupling, we used an electric field to produce a single magnetic domain state, and a magnetic field to induce ionic displacements. Under these conditions, interference between charge and magnetic x-ray scattering arose, encoding the amplitude and phase of the displacements. When combined with a theoretical analysis, our data allow us to resolve the ionic displacements at the femtoscale, and show that such displacements make a substantial contribution to the zero-field ferroelectric moment.

Anisotropy and domain state dependent enhancement of single domain ferrimagnetism in cobalt substituted Ni–Zn ferrites

2016 ◽  
Vol 40 (11) ◽  
pp. 9275-9284 ◽  
Author(s):  
Satu G. Gawas ◽  
Sher Singh Meena ◽  
Seikh M. Yusuf ◽  
Vidhyadatta M. S. Verenkar
Keyword(s):  
Magnetic Anisotropy ◽  
Magnetic Domain ◽  
Single Domain ◽  
Blocking Temperature ◽  
Co Substitution ◽  
State Dependent ◽  
Domain State

Reluctance and favorable orientation of magnetic domain with the field at RT and blocking temperature (TB), respectively, as an effect of enhanced magnetic anisotropy by virtue of Co substitution.

scholarly journals Magnetic domain state diagnosis using hysteresis reversal curves

2017 ◽  
Vol 122 (7) ◽  
pp. 4767-4789 ◽  
Author(s):  
Xiang Zhao ◽  
Andrew P. Roberts ◽  
David Heslop ◽  
Greig A. Paterson ◽  
Yiliang Li ◽  
...  
Keyword(s):  
Magnetic Domain ◽  
Domain State ◽  
State Diagnosis

Determination of magnetic domain state of carbon coated iron nanoparticles via 57Fe zero-external-field NMR

2018 ◽  
Vol 453 ◽  
pp. 125-131 ◽  
Author(s):  
M. Manjunatha ◽  
Rajeev Kumar ◽  
Balaram Sahoo ◽  
Ramakrishna Damle ◽  
K.P. Ramesh
Keyword(s):  
External Field ◽  
Iron Nanoparticles ◽  
Magnetic Domain ◽  
Domain State ◽  
Carbon Coated
Sign in / Sign up

Export Citation Format

Share Document