Spin vortex states and hysteretic properties of submicron size NiFe elements

2000 ◽  
Vol 87 (9) ◽  
pp. 6319-6321 ◽  
Author(s):  
Taras Pokhil ◽  
Dian Song ◽  
Janusz Nowak
Keyword(s):  
Vortex States ◽  
Submicron Size ◽  
Spin Vortex ◽  
Hysteretic Properties

Erratum: “Direct observation of antiferromagnetically oriented spin vortex states in magnetic multilayer elements” [Appl. Phys. Lett. 98, 232511 (2011)]

2011 ◽  
Vol 99 (14) ◽  
pp. 149901 ◽  
Author(s):  
S. Wintz ◽  
T. Strache ◽  
M. Körner ◽  
M. Fritzsche ◽  
D. Markó ◽  
...  
Keyword(s):  
Direct Observation ◽  
Magnetic Multilayer ◽  
Vortex States ◽  
Spin Vortex

scholarly journals Direct observation of antiferromagnetically oriented spin vortex states in magnetic multilayer elements

2011 ◽  
Vol 98 (23) ◽  
pp. 232511 ◽  
Author(s):  
S. Wintz ◽  
T. Strache ◽  
M. Körner ◽  
M. Fritzsche ◽  
D. Markó ◽  
...  
Keyword(s):  
Direct Observation ◽  
Magnetic Multilayer ◽  
Vortex States ◽  
Spin Vortex

scholarly journals Controlling spin vortex states in magnetic nanodisks by magnetic field pulses

2010 ◽  
Vol 200 (4) ◽  
pp. 042002 ◽  
Author(s):  
Roman Antos ◽  
Michal Urbanek ◽  
Yoshichika Otani
Keyword(s):  
Magnetic Field ◽  
Vortex States ◽  
Spin Vortex

Fractional spin-vortex states in F = 2 spinor Bose-Einstein condensates

2019 ◽  
Vol 383 (21) ◽  
pp. 2515-2518 ◽  
Author(s):  
Liang-Liang Xu ◽  
Yong-Kai Liu ◽  
Shiping Feng ◽  
Shi-Jie Yang
Keyword(s):  
Vortex States ◽  
Fractional Spin ◽  
Spin Vortex ◽  
Bose Einstein

Nonvolatile switching of magnetostrictive nanodot from single-domain to vortex states by voltage at room temperature

2021 ◽  
Vol 118 (26) ◽  
pp. 262402
Author(s):  
J. H. Liu ◽  
X. K. Yang ◽  
H. Q. Cui ◽  
D. H. Hong ◽  
C. Li ◽  
...  
Keyword(s):  
Room Temperature ◽  
Single Domain ◽  
Vortex States

scholarly journals A thermodynamic approach to rate-type models in deformable ferroelectrics

2020 ◽  
Author(s):  
Claudio Giorgi ◽  
Angelo Morro
Keyword(s):  
Free Energy ◽  
Electric Field ◽  
Second Law Of Thermodynamics ◽  
Second Law ◽  
Energy Models ◽  
Polarization Electric Field ◽  
Field Plane ◽  
Vector Valued ◽  
Rate Type ◽  
Hysteretic Properties

AbstractThe purpose of the paper is to establish vector-valued rate-type models for the hysteretic properties in deformable ferroelectrics within the framework of continuum thermodynamics. Unlike electroelasticity and piezoelectricity, in ferroelectricity both the polarization and the electric field are simultaneously independent variables so that the constitutive functions depend on both. This viewpoint is naturally related to the fact that an hysteresis loop is a closed curve in the polarization–electric field plane. For the sake of generality, the deformation of the material and the dependence on the temperature are allowed to occur. The constitutive functions are required to be consistent with the principle of objectivity and the second law of thermodynamics. Objectivity implies that the constitutive equations are form invariant within the set of Euclidean frames. Among other results, the second law requires a general property on the relation between the polarization and the electric field via a differential equation. This equation shows a dependence fully characterized by two quantities: the free energy and a function which is related to the dissipative character of the hysteresis. As a consequence, different hysteresis models may have the same free energy. Models compatible with thermodynamics are then determined by appropriate selections of the free energy and of the dissipative part. Correspondingly, major and minor hysteretic loops are plotted.

Geometric effect on the vortex configuration and motion in mesoscopic superconducting cylinders

2015 ◽  
Vol 29 (03) ◽  
pp. 1550009 ◽  
Author(s):  
Shan-Shan Wang ◽  
Guo-Qiao Zha
Keyword(s):  
Phase Transitions ◽  
Vortex Dynamics ◽  
Axial Symmetry ◽  
Time Dependent ◽  
Vortex Matter ◽  
Ginzburg Landau ◽  
Geometric Effect ◽  
Multiply Connected ◽  
Vortex States ◽  
Ginzburg Landau Equations

Based on the time-dependent Ginzburg–Landau equations, we study numerically the vortex configuration and motion in mesoscopic superconducting cylinders. We find that the effects of the geometric symmetry of the system and the noncircular multiply-connected boundaries can significantly influence the steady vortex states and the vortex matter moving. For the square cylindrical loops, the vortices can enter the superconducting region in multiples of 2 and the vortex configuration exhibits the axial symmetry along the square diagonal. Moreover, the vortex dynamics behavior exhibits more complications due to the existed centered hole, which can lead to the vortex entering from different edges and exiting into the hole at the phase transitions.

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