scholarly journals Time dependence of magnetic moment of strontium-ferrite powder measured with a biaxial vibrating sample magnetometer (VSM)

AIP Advances ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 015048
Author(s):  
Tanjina Nasreen Ahmed ◽  
Maria Camila Belduque ◽  
D. C. Binod ◽  
Jitendra S. Tate ◽  
Wilhelmus J. Geerts
Keyword(s):  
Time Dependence ◽  
Magnetic Moment ◽  
Strontium Ferrite ◽  
Ferrite Powder ◽  
Vibrating Sample Magnetometer

Concept of Signal Rod Compensation for Low Magnetic Moment Sample Measurements with a Vibrating Sample Magnetometer

2009 ◽  
Vol 7 (3) ◽  
pp. 433-436
Author(s):  
Louis-Philippe Carignan ◽  
Mathieu Massicotte ◽  
Robert W. Cochrane ◽  
David Ménard
Keyword(s):  
Magnetic Moment ◽  
Vibrating Sample Magnetometer

Magnetic Ink Based on Barium Ferrite and its Application in Magnetic Recording Paper

2015 ◽  
Vol 748 ◽  
pp. 85-88 ◽  
Author(s):  
Ya Ling Li ◽  
Fu Yan Zhao ◽  
Jun Xia Zhao ◽  
Lu Hai Li
Keyword(s):  
Magnetic Recording ◽  
Barium Ferrite ◽  
Magnetic Layer ◽  
Credit Cards ◽  
Ferrite Powder ◽  
Vibrating Sample Magnetometer ◽  
X Ray Diffraction ◽  
Paper Substrate ◽  
X Ray ◽  
Identity Cards

Magnetic stripe cards and magnetic recording paper are commonly used in credit cards, identity cards, and transportation tickets. Barium ferrite was used to prepare magnetic inks and the magnetic ink was coated onto the paper substrate to obtain the magnetic papers. The crystal structure of barium ferrite was characterized by X-ray diffraction (XRD) and the magnetic property of barium ferrite was tested by vibrating sample magnetometer (VSM) The performance of the magnetic recording paper and the surface morphology of the coating magnetic layer were also characterized. The results show that the magnetic ink based on barium ferrite with the formula of 41wt% of the barium ferrite powder, 14wt% of polyurethane, 36wt% of solvent and 9wt% of PVP has good printing characteristics and the magnetic recording papers have good performance.

Using solitons for manipulating qubits

2014 ◽  
Vol 12 (02) ◽  
pp. 1461013 ◽  
Author(s):  
Alessandro Cuccoli ◽  
Davide Nuzzi ◽  
Ruggero Vaia ◽  
Paola Verrucchi
Keyword(s):  
Magnetic Field ◽  
Solid State ◽  
Density Matrix ◽  
Time Dependence ◽  
Magnetic Moment ◽  
Spin Chain ◽  
Quantum Object ◽  
Spin Magnetic Moment ◽  
Quantum Devices ◽  
Nonlinear Excitations

Many proposals for quantum devices are based on qubits that are physically realized by the spin magnetic moment of some quantum object. In this case, one of the most often adopted strategies for manipulating qubits is that of using external magnetic fields. However, selectively applying a field just to one qubit may be a practically unattainable goal, as it is, for instance, in most solid-state based setups. In this work, we present a proposal for using nonlinear excitations of solitonic type to accomplish the above task. Our scheme entails the generation of a dynamical soliton in a classical spin-chain which is locally coupled with one qubit: as the soliton runs through, the qubit behaves, due to its interaction with the chain, as if it were subject to a magnetic field with a time dependence that follows from the soliton's features. We here present results for the time evolution of the qubit density-matrix induced by the overall dynamics of the above scheme.

Estimate of the Anisotropy Field of Strontium Ferrite from Powders Using the Stoner-Wohlfarth Model

2016 ◽  
Vol 881 ◽  
pp. 128-133
Author(s):  
Marcos Flavio de Campos ◽  
Sergio A. Romero ◽  
Daniel Rodrigues
Keyword(s):  
Anisotropy Field ◽  
Strontium Ferrite ◽  
Hysteresis Curve ◽  
Vibrating Sample Magnetometer ◽  
Powder Samples

The isotropic Stoner-Wohlfarth model can be applied for the determination of the anisotropy field in powders. Samples of strontium ferrite - SrFe12O19 – were measured in Vibrating Sample Magnetometer (VSM). By means of the fitting of the first quadrant of the hysteresis curve the anisotropy field was estimated as 19-20 kOe for the SrFe12O19 phase. The main advantage of the method is its simplicity, because compacting or sintering of the powder samples is not necessary

Aneurysm clips: magnetic quantification and magnetic resonance imaging safety

1997 ◽  
Vol 87 (5) ◽  
pp. 788-794 ◽  
Author(s):  
Manuel Dujovny ◽  
M. Serdar Alp ◽  
Nadav Dujovny ◽  
Y. J. Zhao ◽  
N. Rao Gundamraj ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Magnetic Resonance ◽  
Mr Imaging ◽  
Magnetic Moment ◽  
Vibrating Sample Magnetometer ◽  
Resonance Imaging ◽  
Content Type ◽  
Different Types ◽  
Testing Field ◽  
Magnetic Resonance Imaging Safety

✓ Knowledge of the magnetic properties of cerebral aneurysm clips in patients undergoing magnetic resonance (MR) imaging is imperative. The authors quantified in electromagnetic units the magnetic properties of 13 different types of aneurysm clips by using a vibrating sample magnetometer. Their results showed that the magnetic moment of these clips ranged from 0.15 EMU/g to as high as 152.7 EMU/g. Based on these results and tests of the movement of the clips during MR imaging, they conclude that aneurysm clips with a magnetic moment less than 1 EMU/g may be safely used during MR imaging. The quantification of magnetic properties into electromagnetic units by using a vibrating sample magnetometer is a reliable method applicable to any testing field gradient. This method can be used as a standard to measure and label the magnetic properties of aneurysm clips.

scholarly journals FeCo Nanowire–Strontium Ferrite Powder Composites for Permanent Magnets with High-Energy Products

2020 ◽  
Vol 3 (10) ◽  
pp. 9842-9851
Author(s):  
J. C. Guzmán-Mínguez ◽  
S. Ruiz-Gómez ◽  
L. M. Vicente-Arche ◽  
C. Granados-Miralles ◽  
C. Fernández-González ◽  
...  
Keyword(s):  
Permanent Magnets ◽  
High Energy ◽  
Strontium Ferrite ◽  
Ferrite Powder ◽  
Powder Composites ◽  
Energy Products

Microstructure of pre-sintered permanent magnetic strontium ferrite powder

Rare Metals ◽  
2006 ◽  
Vol 25 (6) ◽  
pp. 572-577 ◽  
Author(s):  
H YU ◽  
Z LIU ◽  
D ZENG
Keyword(s):  
Strontium Ferrite ◽  
Ferrite Powder
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