Magnetic properties of finite superconducting cylinders. II. Nonuniform applied field and levitation force

2001 ◽  
Vol 64 (21) ◽  
Author(s):  
Carles Navau ◽  
Alvaro Sanchez
Keyword(s):  
Magnetic Properties ◽  
Applied Field ◽  
Levitation Force

Two Dimensional Magnetic Properties of PdFe Layers

1995 ◽  
Vol 384 ◽  
Author(s):  
F. Petroff ◽  
V. Cros ◽  
A. Fert ◽  
S. Lamolle ◽  
M. Wiedmann ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Molecular Beam Epitaxy ◽  
Applied Field ◽  
Molecular Beam ◽  
Two Dimensional ◽  
Logarithmic Dependence

ABSTRACTWe have studied the magnetic properties of very thin PdFe films grown by molecular beam epitaxy. The behavior expected for a 2D Heisenberg system - that is a variation of the susceptibility as exp(B/T) and a logarithmic dependence of the magnetization on the applied field - is observed in a certain range of temperature and field. This is in agreement with recent results of Webb et al [1].

MAGNETIC ANISOTROPY OF CoFeB AMORPHOUS NANOTUBES PREPARED BY ELECTROLESS PLATING IN MAGNETIC FIELD

2013 ◽  
Vol 27 (19) ◽  
pp. 1341006 ◽  
Author(s):  
Z. LIU ◽  
W. L. LI ◽  
W. D. FEI
Keyword(s):  
Magnetic Field ◽  
Magnetic Properties ◽  
Magnetic Anisotropy ◽  
Electroless Plating ◽  
Applied Field ◽  
Anodized Aluminum ◽  
Anodized Aluminum Oxide ◽  
Squareness Ratio ◽  
Out Of Plane ◽  
Structural And Magnetic Properties

CoFeB nanotubes were fabricated by electroless plating in magnetic field using anodized aluminum oxide template, and the structural and magnetic properties of CoFeB nanotubes were investigated. It is found that some nano-scale particles form on the wall of nanotubes. Both coercivity ratio and squareness ratio of out-of-plane to in-plane are significantly changed by the applied magnetic field during electroless plating, which indicates that directional ordering in amorphous CoFeB nanotubes are achieved during electroless plating under magnetic field. The results show that the applied field impacts the magnetic anisotropy of amorphous nanotubes. The anisotropy is stronger with the magnitude of applied field increasing.

Magnetic Anisotropy of Cerium Endohedral Metallofullerene

2001 ◽  
Vol 706 ◽  
Author(s):  
Masayasu Inakuma ◽  
Toshiaki Enoki ◽  
Haruhito Kato ◽  
Hisanori Shinohara
Keyword(s):  
Magnetic Properties ◽  
Magnetic Susceptibility ◽  
Low Temperature ◽  
Magnetic Anisotropy ◽  
Rotational Motion ◽  
Applied Field ◽  
Magnetic Interaction ◽  
Magnetization Measurement ◽  
Antiferromagnetic Interaction ◽  
Antiferromagnetic Coupling

AbstractThe magnetic properties of Ce@C82 have been studied. The magnetic anisotropy of Ce@C82 was analyzed taking account of the crystal field of the interior C82 cage acting on Ce3+ ion. Results showed that the reduction of the susceptibility at low temperature was caused due to the antiferromagnetic coupling between Ce3+ ion and C82 cage. The magnetization measurement at several temperatures also supported the antiferromagnetic interaction at low temperature. The magnetic susceptibility larger than the calculated one was measured at higher temperatures due to the magnetic interaction between the metallofullerenes and between the particles in the crystal. The magnetization of some frozen Ce@C82 solutions was found to depend on the applied field magnitude. The dependence suggested that the magnetic anisotropy of Ce ion induced a torque to restrict the rotational motion of Ce@C82 by the field.

EXPONENTIAL MODEL FOR LEVITATION FORCE OF YBa2Cu3O7-δ BULKS IN APPLIED FIELDS

2005 ◽  
Vol 19 (01n03) ◽  
pp. 395-397 ◽  
Author(s):  
HONGHAI SONG ◽  
ZHONGYOU REN ◽  
JUN ZHENG ◽  
XINGZHI WANG ◽  
SUYU WANG ◽  
...  
Keyword(s):  
High Temperature ◽  
Critical Current Density ◽  
Current Density ◽  
Applied Field ◽  
Levitation Force ◽  
High Temperature Superconductors ◽  
Exponential Model ◽  
Exponential Relationship ◽  
Bean Model ◽  
Applied Fields

The exponential model is proposed for levitation force calculations of high temperature superconductors in place of Bean model according to the Exponential relationship between the critical current density and applied field. The calculated results are larger than the experimental results in both symmetrical and unsymmetrical applied fields. The normalization curves agree well in the symmetrical applied field, however, they much differ in the unsymmetrical applied field.

Ferromagnetism in the boundary layer of 3He on graphite

1987 ◽  
Vol 65 (11) ◽  
pp. 1351-1356 ◽  
Author(s):  
L. J. Friedman ◽  
S. N. Ytterboe ◽  
H. M. Bozler ◽  
A. L. Thomson ◽  
M. C. Cross
Keyword(s):  
Boundary Layer ◽  
Nuclear Magnetic Resonance ◽  
Magnetic Properties ◽  
Magnetic Resonance ◽  
Applied Field ◽  
Resonance Spectrum ◽  
Static Field ◽  
Collective Modes ◽  
Frequency Shifts ◽  
Low Field

We study the magnetic properties of 3He confined in a grafoil substrate with the static applied field more than two orders of magnitude less than in prior experiments. In this low-field regime, we observe new modes in the nuclear magnetic resonance spectrum that arise for T < 1 mK. We interpret these as the collective modes of ferromagnetically ordered domains in the 3He boundary layers. The frequency shifts of these modes suggest that the domains reorient as the static field is varied. From the size of the frequency shifts, we also conclude that 3He dipole fields can only partially account for the system anisotropy energy.

scholarly journals Effects of Anisotropy and Longitudinal Field on a Ferrimagnetic Nanowire

2015 ◽  
Vol 53 ◽  
pp. 64-70
Author(s):  
Hadey K. Mohamad ◽  
Hassan Traikim Badh Al Hamade
Keyword(s):  
Magnetic Properties ◽  
Temperature Dependence ◽  
Exchange Coupling ◽  
Applied Field ◽  
Considerable Effect ◽  
Outer Shell ◽  
Core Shell ◽  
Two Dimensional ◽  
Longitudinal Field ◽  
Longitudinal Magnetization

A ferrimagnetic nanowire consists of the spin-1/2 core and spin-1 outer shell has been studied. The general formula for the temperature dependence of the longitudinal magnetization of the system is given. The ferrimagnetic core-shell nanowire system exhibits two and three compensation points when the temperature of the system is changed at fixed values of the anisotropy of shell sublattice and longitudinal field, respectively. The competition among the exchange coupling between the outer shell and core, the outer shell coupling, the anisotropy, the applied field, and the temperature has a considerable effect on the characteristic of magnetic properties in a two-dimensional nanowire system.

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