The electrical resistivity of monocrystalline U3As4 in the vicinity of the curie temperature in an external magnetic field

1973 ◽  
Vol 20 (1) ◽  
pp. K69-K72 ◽  
Author(s):  
Z. Henkie ◽  
J. Klamut
Keyword(s):  
Magnetic Field ◽  
Electrical Resistivity ◽  
External Magnetic Field ◽  
Curie Temperature

scholarly journals On the crustal bias of repeat stations in Romania

2013 ◽  
Vol 55 (6) ◽  
Author(s):  
Venera Dobrica ◽  
Crisan Demetrescu ◽  
Razvan Greculeasa ◽  
Anca Isac
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Curie Temperature ◽  
Magnetic Induction ◽  
Electromagnetic Induction ◽  
Reference Station ◽  
Lateral Variation ◽  
Field Campaigns ◽  
Induction Model ◽  
Geomagnetic Measurements

<p>A magnetic induction model has been applied to recordings obtained in 2010 during the field campaigns for geomagnetic measurements at the 26 repeat stations of the Romanian secular variation network. The model is based on the observation that a variable external magnetic field induces a response of the Earth's interior not only by electromagnetic induction, but also by magnetic induction in the magnetic rocks above the Curie temperature. The model computes coefficients of a linear relationship between recorded values of a certain geomagnetic element (X, Y, Z, or F) at the repeat station and recorded X, Y, Z values at a reference station (in this case, SUA observatory). Coefficients depend on magnetic permeabilities of rocks beneath the station and stand as a proxy for the anomaly bias characterizing the site. Maps of the lateral variation of this type of information were obtained and discussed.</p>

Magnetization and Curie Temperature of Ferromagnetic Ultrathin Films: The Influence of Magnetic Anisotropy and Dipolar Interactions (invited)

1991 ◽  
Vol 231 ◽  
Author(s):  
P. Bruno
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Curie Temperature ◽  
Magnetic Anisotropy ◽  
Long Range ◽  
Ultrathin Films ◽  
Experimental Results ◽  
Dipolar Interactions ◽  
Surface Gradient ◽  
Theoretical Investigations

AbstractTheoretical investigations of the magnetization and Curie temperature of ferromagnetic ultrathin films in the presence of magnetic anisotropy and long-range dipolar interactions are presented. The Curie temperature of fcc (001) cobalt ultrathin films is calculated and compared with experimental results on Co/Cu (001) films. The influence of an external magnetic field, and the surface gradient of the magnetization are also discussed.

scholarly journals Broad band infrared modulation using spintronic-plasmonic metasurfaces

Nanophotonics ◽  
2019 ◽  
Vol 8 (10) ◽  
pp. 1847-1854 ◽  
Author(s):  
Gaspar Armelles ◽  
Luca Bergamini ◽  
Nerea Zabala ◽  
María Ujué González ◽  
Fernando García ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Electrical Resistivity ◽  
External Magnetic Field ◽  
Spectral Range ◽  
Giant Magnetoresistance ◽  
Optical Constants ◽  
Broad Band ◽  
Resonance Wavelength ◽  
Wide Spectral Range ◽  
Direct Fabrication

AbstractWe present magnetic field induced modulation of the optical response of slit plasmonic metasurfaces fabricated out of giant magnetoresistance/spintronic materials in the 2–17 μm spectral range of the spectrum. The modulation of the slit plasmonic modes is due to the modification of the electrical resistivity (and, in turn, of the optical constants) induced by the application of an external magnetic field. This modulation is found to continuously increase both with the slit concentration and with the slit resonance wavelength, with a prospective further increase for wavelengths of up to 60–80 μm. The direct fabrication and implementation of the modulation setup opens a competitive route for the development of active plasmonic metasurfaces in a wide spectral range.

Magnetism and Structural Behavior of CeRuSn Single Crystal

2012 ◽  
Vol 194 ◽  
pp. 40-44 ◽  
Author(s):  
Jan Fikáček ◽  
Jiří Prchal ◽  
Jan Prokleška ◽  
Ivana Císařová ◽  
Vladimír Sechovský
Keyword(s):  
Magnetic Field ◽  
Electrical Resistivity ◽  
External Magnetic Field ◽  
Low Temperature ◽  
Specific Heat ◽  
Single Crystals ◽  
Structural Behavior ◽  
Large Temperature ◽  
Temperature Hysteresis ◽  
Antiferromagnetic Transition

We have synthesized CeRuSn single crystals and performed measurements of electrical resistivity and specific heat. At high temperatures, abrupt transitions were observed at 290 and 225 K in electrical resistivity during cooling. Both transitions are connected with a large temperature hysteresis. Low temperature properties are dominated by an antiferromagnetic transition at 2.9 K, which involves only half of cerium ions, leaving the rest of them non-magnetic. A significant magnetocrystalline anizotropy was revealed by application of external magnetic field.

Investigation of the Electrical Resistivity of 20μm-Gap Gold-DNA-Gold Structure: Exploiting the Current-Voltage Characteristics under a Variable External Magnetic Field

2014 ◽  
Vol 554 ◽  
pp. 155-159 ◽  
Author(s):  
Nadia Mahmoudi Khatir ◽  
Zulkurnain Abdul-Malek ◽  
Seyedeh Maryam Banihashemian
Keyword(s):  
Magnetic Field ◽  
Electrical Resistivity ◽  
External Magnetic Field ◽  
Molecular Electronics ◽  
Electronic Devices ◽  
Charge Carriers ◽  
Current Voltage ◽  
Dna Strands ◽  
Pcr Method ◽  
Current Voltage Characteristics

Deoxyribonucleic acid (DNA), as the most important molecule in nature, holds promise as a key element of the molecular electronics as its utilization in the synthesis of electronic devices such as micro and nanosensors has increased remarkably during the recent years. Our work is devoted to an experimental study of the electrical resistivity of a gold-DNA-gold (GDG) structure in the presence of a variable external magnetic field. The DNA strands, extracted by the PCR method, were used to fabricate the GDG structures. The resistivity of the structure was found to rise sharply with the magnitude of the exerted magnetic field due to onset and progression of the cyclotron effects in charge carriers. Such a distinct current-voltage signature can possibly be employed for realization of an accurate magnetic sensor.

scholarly journals The effective susceptibility of a paramagnetic powder

1941 ◽  
Vol 178 (972) ◽  
pp. 86-92 ◽  
Keyword(s):  
Magnetic Field ◽  
Magnetic Material ◽  
External Magnetic Field ◽  
Curie Temperature ◽  
Temperature Scale ◽  
Preceding Paper ◽  
Theoretical Expression ◽  
Demagnetizing Field ◽  
Definition Of ◽  
Packed Powder

The effective susceptibility (that is, the magnetic moment divided by the external magnetic field) of a paramagnetic powder loosely packed into an ellipsoidal container has been measured against the vapour pressure of liquid helium, and hence, using the results of the preceding paper, against the susceptibility of the compact salt. The definition of the ‘Curie’ temperature scale is based on the latter, and it is found that the correction to be applied in calculating the Curie temperature from the effective susceptibility of the powder agrees with that given by a theoretical expression derived from Breit’s calculation of the demagnetizing field of a powder. This is of importance both in experiments using a loosely packed powder and in experiments using a paramagnetic powder mixed with a non-magnetic material.

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