High field measurements of giant intrinsic magnetic hardness in SmCo5−xNixand SmCo5−yCuy

1978 ◽  
Vol 49 (3) ◽  
pp. 2061-2063 ◽  
Author(s):  
S. Foner ◽  
E. J. McNiff ◽  
H. Oesterreicher ◽  
F. T. Parker ◽  
M. Misroch
Keyword(s):  
High Field ◽  
Field Measurements ◽  
Magnetic Hardness

scholarly journals Field-induced canting of magnetic moments in GdCo5 at finite temperature: first-principles calculations and high-field measurements

2018 ◽  
Vol 30 (32) ◽  
pp. 32LT01 ◽  
Author(s):  
Christopher E Patrick ◽  
Santosh Kumar ◽  
Kathrin Götze ◽  
Matthew J Pearce ◽  
John Singleton ◽  
...  
Keyword(s):  
First Principles ◽  
Finite Temperature ◽  
High Field ◽  
Magnetic Moments ◽  
Field Measurements ◽  
First Principles Calculations

Proton NMR-Relaxation Dispersion in Meconium Solutions and Healthy Amniotic Fluid: Possible Applications to Medical Diagnosis

1982 ◽  
Vol 37 (5-6) ◽  
pp. 394-398 ◽  
Author(s):  
Georges J. Béné ◽  
Bernard Borcard ◽  
Volker Graf ◽  
Emile Hiltbrand ◽  
Patric Magnin ◽  
...  
Keyword(s):  
Relaxation Time ◽  
Amniotic Fluid ◽  
Medical Diagnosis ◽  
High Field ◽  
Relaxation Times ◽  
Nmr Relaxation ◽  
Field Measurements ◽  
Relaxation Dispersion ◽  
Longitudinal Relaxation Time ◽  
Relaxation Experiments

Abstract In order to show that for a possible application in medical diagnosis NMR-relaxation experiments at low Larmor frequencies (v0 ≤ 20 kHz) are more sensitive than the up to now done high field measurements in the MHz-range, we present dispersion curves (v0 = 50 Hz to 50 MHz) of the proton longitudinal relaxation time T1 and values of the transversal relaxation time T2 for the example of amniotic fluids. Only for Larmor frequencies below ≃ 100 kHz the relaxation times for healthy amniotic fluid and pathological meconium solutions are significantly different, whereas at high Larmor frequencies, i. e. in the conventional MHz-range, the observed changes are rather small.

Determination of the irreversibility field of YBCO thin films from pulsed high-field measurements

2007 ◽  
Vol 20 (3) ◽  
pp. 228-231 ◽  
Author(s):  
J Hänisch ◽  
N Kozlova ◽  
C Cai ◽  
K Nenkov ◽  
G Fuchs ◽  
...  
Keyword(s):  
Thin Films ◽  
High Field ◽  
Field Measurements ◽  
Irreversibility Field ◽  
Ybco Thin Films

scholarly journals Weakly-Emergent Strain-Dependent Properties of High Field Superconductors

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Paul Branch ◽  
Yeekin Tsui ◽  
Kozo Osamura ◽  
Damian P. Hampshire
Keyword(s):  
High Field ◽  
High Sensitivity ◽  
Field Measurements ◽  
Critical Parameters ◽  
Large Strains ◽  
Single Strain ◽  
Strain Dependence ◽  
Emergent Behaviour ◽  
Angular Average ◽  
Unstrained State

Abstract All superconductors in high field magnets operating above 12 T are brittle and subjected to large strains because of the differential thermal contraction between component parts on cool-down and the large Lorentz forces produced in operation. The continuous scientific requirement for higher magnetic fields in superconducting energy-efficient magnets means we must understand and control the high sensitivity of critical current density Jc to strain ε. Here we present very detailed Jc(B, θ, T, ε) measurements on a high temperature superconductor (HTS), a (Rare−Earth)Ba2Cu3O7−δ (REBCO) coated conductor, and a low temperature superconductor (LTS), a Nb3Sn wire, that include the very widely observed inverted parabolic strain dependence for Jc(ε). The canonical explanation for the parabolic strain dependence of Jc in LTS wires attributes it to an angular average of an underlying intrinsic parabolic single crystal response. It assigns optimal superconducting critical parameters to the unstrained state which implies that Jc(ε) should reach its peak value at a single strain (ε = εpeak), independent of field B, and temperature T. However, consistent with a new analysis, the high field measurements reported here provide a clear signature for weakly-emergent behaviour, namely εpeak is markedly B, (field angle θ for the HTS) and T dependent in both materials. The strain dependence of Jc in these materials is termed weakly-emergent because it is not qualitatively similar to the strain dependence of Jc of any of their underlying component parts, but is amenable to calculation. We conclude that Jc(ε) is an emergent property in both REBCO and Nb3Sn conductors and that for the LTS Nb3Sn conductor, the emergent behaviour is not consistent with the long-standing canonical explanation for Jc(ε).

Rapid Thermal Processing and Properties of Sol-Gel Derived Ferroelectric Thin-Films for Non-Volatile Memories.

1991 ◽  
Vol 224 ◽  
Author(s):  
C. K. Barlingay ◽  
S. K Dey
Keyword(s):  
Thin Films ◽  
Thermal Processing ◽  
High Field ◽  
Growth Habit ◽  
Sol Gel ◽  
Rapid Thermal Processing ◽  
Field Measurements ◽  
Ferroelectric Thin Films ◽  
Columnar Growth ◽  
Ferroelectric Switching

AbstractFerroelectric Pb(Zr0.52Ti0.48)O3 or PZT (52/48) thin-films (0.5 μm) were integrated onto Pt passivated Si wafers (3–4 inches) by polymeric solgel processing followed by rapid thermal annealing. Dense and crack-free perovskite microstructures were obtained by densification of the amorphous gel-matrix prior to crystallization. The films exhibited submicron grains (0.2–0.6 μm) with a columnar growth habit. High field measurements on thin-films determined Pr, Psp, and Ec in the ranges of 29–32 μC/cm2. 44–58 μC/cm2, and 50–60 kV/cm, respectively, and ferroelectric switching times below 3 ns.

Magnetic properties of neptunium Laves phases: High-field measurements on NpAl2and NpOs2

1976 ◽  
Vol 14 (3) ◽  
pp. 1276-1282 ◽  
Author(s):  
A. T. Aldred ◽  
B. D. Dunlap ◽  
G. H. Lander
Keyword(s):  
Magnetic Properties ◽  
High Field ◽  
Field Measurements ◽  
Laves Phases
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