SPECIFIC HEAT AND THERMAL CONDUCTIVITY OF TmVO4 AND DyVO4 WITH AN APPLIED MAGNETIC FIELD

1981 ◽  
Vol 42 (C6) ◽  
pp. C6-277-C6-279 ◽  
Author(s):  
B. Daudin ◽  
B. Salce ◽  
S. H. Smith
Keyword(s):  
Magnetic Field ◽  
Thermal Conductivity ◽  
Specific Heat ◽  
Applied Magnetic Field

Properties of H0 VO 4 below 1 K II. The radio-frequency susceptibility

1980 ◽  
Vol 372 (1748) ◽  
pp. 9-17 ◽  
Keyword(s):  
Magnetic Field ◽  
Radio Frequency ◽  
Specific Heat ◽  
Applied Magnetic Field ◽  
Optical Measurements ◽  
Nuclear System ◽  
Magnetic Specific Heat ◽  
Van Vleck ◽  
Good Agreement

Radio-frequency methods are used to determine the variation with applied magnetic field (up to 7T) of the adiabatic susceptibility of the Van Vleck electronic paramagnet HoV0 4 , and the magnetic specific heat of the enhanced nuclear system 165HoV0 4 . The results are in good agreement with values deduced from optical measurements (Battison et al . 1977) and n.m.r. measurements (Bleaney et al . 1978).

scholarly journals Specific heat in KFe2As2in zero and applied magnetic field

2011 ◽  
Vol 83 (17) ◽  
Author(s):  
J. S. Kim ◽  
E. G. Kim ◽  
G. R. Stewart ◽  
X. H. Chen ◽  
X. F. Wang
Keyword(s):  
Magnetic Field ◽  
Specific Heat ◽  
Applied Magnetic Field

Scaling temperature dependencies of specific heat of Sm0.55Sr0.45MnO3 manganite near critical point in applied magnetic field up to 5T

2010 ◽  
Vol 405 (21) ◽  
pp. 4574-4577 ◽  
Author(s):  
Shapiullah Belalovich Abdulvagidov ◽  
Victor Ignat’eich Nizhankovskii ◽  
Liana Kurbanovna Magomedova
Keyword(s):  
Magnetic Field ◽  
Specific Heat ◽  
Critical Point ◽  
Applied Magnetic Field

scholarly journals Specific heat ofCe1−xLaxRhIn5in zero and applied magnetic field: A rich phase diagram

2002 ◽  
Vol 66 (13) ◽  
Author(s):  
J. S. Kim ◽  
J. Alwood ◽  
D. Mixson ◽  
P. Watts ◽  
G. R. Stewart
Keyword(s):  
Magnetic Field ◽  
Phase Diagram ◽  
Specific Heat ◽  
Applied Magnetic Field ◽  
Rich Phase

Experimental Investigation of Magnetically-Induced Thermal Conductance Variations in a Ferromagnetic Nanofluid

2011 ◽  
Author(s):  
Alexander M. Gardner ◽  
Indira Seshadri ◽  
Ganpati Ramanath ◽  
Theodorian Borca-Tasciuc
Keyword(s):  
Magnetic Field ◽  
Thermal Conductivity ◽  
Experimental Investigation ◽  
Magnetic Fields ◽  
Thermal Resistance ◽  
Applied Magnetic Field ◽  
Thermal Conductance ◽  
Flow Characteristics ◽  
Test Apparatus ◽  
The Subject

Ferrofluids have been the subject of great interest in engineering because of their unique flow characteristics under magnetic fields (Rosensweig, 1987). However, there are limited experiments which show the potential of ferrofluids to undergo controlled changes in thermal conductivity (Philip et al., 2008) under magnetic fields. The purpose of this experiment is to investigate thermal transport in ferrofluids. A test apparatus was designed and the thermal resistance of a commercially available ferromagnetic fluid within a test cell was measured as a function of the applied magnetic field.

THE LOW-TEMPERATURE SPECIFIC HEAT OF U(Pt, Pd)3

1993 ◽  
Vol 07 (01n03) ◽  
pp. 14-17
Author(s):  
H. P. VAN DER MEULEN ◽  
J. J. M. FRANSE ◽  
A. DE VISSER
Keyword(s):  
Magnetic Field ◽  
Low Temperature ◽  
Specific Heat ◽  
Applied Magnetic Field ◽  
Low Temperatures ◽  
Single Crystalline ◽  
Normal Part ◽  
Electron Contribution ◽  
Heavy Electron ◽  
Low Temperature Specific Heat

Specific-heat measurements on single-crystalline samples of U ( Pt 1− x Pd x )3 ( x = 0.00, 0.05 and 0.10) reveal anomalously large values for c/T at low temperatures. The data for UPt 3 have previously been analyzed by making use of the enhanced value of the low-temperature Grüneisen parameter. By this analysis, the heavy-electron contribution to the specific heat has been separated from the normal part that is largely due to the phonon term. Taking this latter term to be the same for all three compounds, the heavy-electron contribution has been evaluated for temperatures below 20 K. This contribution is compared with a spin-1/2 Kondo-type of specific heat. The resulting curves for the x = 0.00 and x = 0.10 alloys are very similar and mainly differ in the temperature at which the maximum is found. The effect of an applied magnetic field within the hexagonal plane, however, shifts the maximum to lower temperatures for x = 0.00 whereas for x = 0.10 a shift towards higher temperatures is found.

Processing of Bulk MgB2 Superconductors for Application in Fault Current Limiters

2016 ◽  
Vol 856 ◽  
pp. 32-37
Author(s):  
Tatiana Prikhna ◽  
Vladimir Sokolovsky ◽  
Victor Meerovich ◽  
Michael Eisterer ◽  
Athanasios G. Mamalis ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Thermal Conductivity ◽  
Critical Current Density ◽  
Applied Magnetic Field ◽  
Ac Losses ◽  
Fault Current ◽  
Technology Process ◽  
Fault Current Limiters ◽  
Material Porosity ◽  
Rate Of Response

Fault current limiters (FCL) require superconducting (SC) materials which can provide a definite rate of response to a fault event resulting in the SC – normal state reversible transition. The main characteristics determined the material suitability are the critical current density, jc, thermal conductivity and capacity which are strongly determined by manufacturing technology, in particular, of MgB2. In the paper we estimate the jc of bulk MgB2 samples by the vibrating magnetometer and inductive, contactless transformer, method using ring samples. The bulk MgB2 samples were produced under 30 MPa (hot pressing) and 2 GPa (quasihydrostatic pressing) at 800-1050 оС from different initial ingredients (Mg and B or MgB2 with and without additions). It is shown that the technology process and initial ingredients strongly influence the distribution of boron-and oxygen-enriched nanosized inhomogenities in MgB2 matrix, connectivity between SC grains, material porosity and, as result, the SC properties. The transformer method gives the jc in the range from 1.6·104 up to 6.3·104 A/cm2 at about 4 K while using magnetometer measurements the jc is estimated from 2.24·105 up to 5.1·105 A/cm2 at 10 K in self-magnetic fields. The contradictions in the jc estimated by different methods can be explained by instability of the SC state of MgB2, caused by variation of the applied magnetic field. Using the transformer method AC losses per a cycle before quenching for the best materials were estimated around 0.75-1 J/cm3, while the power of losses was about 200 W. The FCL model with rings cut out from SC MgB2 materials prepared using various technologies demonstrated that MgB2 is a promising material for application in inductive FCLs.

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