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Tent, B.A.; Qu, D.; Shi, Donglu; Bresser, W. J.; Boolchand, P.; Cai, Zhi-Xiong

doi:10.1103/physrevb.58.11761

Cited by 22 publications

(10 citation statements)

References 16 publications

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“…Existing studies on superconducting samples with spherical geometry, ranging from superconducting balls to hollow spheres [8,11,41,42], have not provided a systematic description of the vortex nucleation phenomena. Due to the use of superconducting hollow spheres in the technological applications of superconductivity, for instance, in the superconducting gravimeters [34], the Gravity Probe B gyroscopes [30], and the latest development in superconducting nano-clusters [37,38], it is of both theoretical and practical interests to study the vortex structures related to the spherical geometries.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulations of the quantized vortices on a thin superconducting hollow sphere

2004

Journal of Computational Physics

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Section: Introductionmentioning

confidence: 99%

Numerical simulations of the quantized vortices on a thin superconducting hollow sphere

2004

Journal of Computational Physics

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“…25 Other characteristics of the HTS, such as the anisotropy and the grain orientation inside the MTG samples have been studied and shown to affect the levitation force. 14,26 The stiffness of the PM-HTS system, which represents the spring constant associated with vibrational motion of the levitation system has been intensively studied. Experimental results for vertical stiffness, lateral stiffness and cross stiffness have been presented.…”

Section: Introductionmentioning

confidence: 99%

Calculation of the hysteretic force between a superconductor and a magnet

Qin

Liu

et al. 2002

Phys. Rev. B

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The magnetic levitation forces exerted on a high-temperature superconducting ͑HTS͒ disk by a cylindrical permanent magnet ͑PM͒ are calculated from first principles for superconductors with finite thickness. The current j( ,z) and field B( ,z) profiles in the HTS in the nonuniform magnetic field generated by the PM are derived. The levitation force depends nonlinearly on the critical current density j c and on the thickness of the HTS. The flux creep is described by a current-voltage law E( j)ϭE c ( j/ j c ) n , from which we show that the levitation force depends on the speed at which the PM approaches or recedes from the HTS, which accounts for the experimentally observed force creep phenomenon. The stiffness of the system is derived by calculating minor force loops. The numerical results reproduce many of the features observed in experiments.

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“…Recently peritectic solidification has attracted more attention in experimental and theoretical studies . Since many technologically important materials are peritectics, studies on unidirectional solidification of peritectic alloys have been carried out on such as Zn-Ag [24,25], Sn-Cd [26][27][28], Pb-Bi [29][30][31][32][33], Zn-Cu [11,34,35], Sn-Sb [36], high temperature superalloys Al-Ti [16,19], Ni-Ti [15] and Ni-Al [22], superconducting materials YBCO [14,15], magnetic materials Fe-Nd-B [21], and structural materials Fe-Ni [17,18].…”

Section: Solidification Of Single Phase and Peritectic Alloysmentioning

confidence: 99%