Origin of the anisotropic upper critical fields in single crystals of superconducting rare-earth ternary borides

1986 ◽  
Vol 33 (9) ◽  
pp. 6132-6134 ◽  
Author(s):  
G. K. Shenoy ◽  
S. K. Malik
Keyword(s):  
Rare Earth ◽  
Single Crystals ◽  
Critical Fields ◽  
Upper Critical Fields

UPPER CRITICAL FIELDS IN RARE EARTH COMPOUNDS

1978 ◽  
Vol 39 (C6) ◽  
pp. C6-377-C6-378 ◽  
Author(s):  
S. Maekawa ◽  
M. Tachiki ◽  
H. Kurita
Keyword(s):  
Rare Earth ◽  
Rare Earth Compounds ◽  
Critical Fields ◽  
Upper Critical Fields

Anisotropy of the Upper Critical Fields in Al-Substituted MgB2 Single Crystals

2008 ◽  
Vol 52 (5) ◽  
pp. 1617-1620
Author(s):  
Byeongwon Kang ◽  
Heon-Jung Kim ◽  
Hyun-Sook Lee ◽  
Sung-Ik Lee
Keyword(s):  
Single Crystals ◽  
Critical Fields ◽  
Upper Critical Fields

Superconductivity at Tc = 36.5 K in Na-Substituted SrFe2As2 Single Crystals

2014 ◽  
Vol 95 ◽  
pp. 150-155 ◽  
Author(s):  
Larysa Shlyk ◽  
Markus Bischoff ◽  
Eva Rose ◽  
Rainer Niewa
Keyword(s):  
Single Crystals ◽  
Anisotropy Ratio ◽  
Superconducting Transition ◽  
Critical Fields ◽  
Superconducting Cuprates ◽  
Resistivity Measurements ◽  
Relaxation Measurements ◽  
Narrow Width ◽  
Upper Critical Fields

We report superconductivity, which is achieved in Sr1-xNaxFe2As2 at Tc = 36.5 K for x = 0.47. Single crystals of Na-substituted SrFe2As2 up to 2 × 2 mm2 were grown from NaF flux. The superconducting transition temperature with a narrow width less than 2 K, confirmed by both magnetic and resistivity measurements, indicates the high quality of our samples. The upper critical fields (0) = 87 T and (0) = 217.5 T are extremely high. The anisotropy ratio γ ~ 2.5 is close to that of other hole-or electron-doped 122 phases but lower than γ ~ 4.3 – 5 of phases from the 1111 series and much lower than γ ~ 7 – 10 of superconducting cuprates. Magnetic relaxation measurements, which are consistent with the collective pinning model, reveal that the flux-creep rate in Na substituted 122 SrFe2As2 is smaller than in 1111 type iron pnictides.

scholarly journals Anisotropic upper critical fields up to 63 T in CaKFe4As4 single crystals

2017 ◽  
Author(s):  
T. Kong ◽  
Fedor Fedorovich Balakirev ◽  
W. R. Meier ◽  
A. Gurevich ◽  
P. C. Canfield ◽  
...  
Keyword(s):  
Single Crystals ◽  
Critical Fields ◽  
Upper Critical Fields

scholarly journals Pressure dependence of upper critical fields in FeSe single crystals

2016 ◽  
Vol 29 (3) ◽  
pp. 035007 ◽  
Author(s):  
Ji-Hoon Kang ◽  
Soon-Gil Jung ◽  
Sangyun Lee ◽  
Eunsung Park ◽  
Jiunn-Yuan Lin ◽  
...  
Keyword(s):  
Single Crystals ◽  
Pressure Dependence ◽  
Critical Fields ◽  
Upper Critical Fields

Upper critical fields of superconducting superconducting rare-earth molybdenum selenides

1976 ◽  
Vol 57 (4) ◽  
pp. 345-346 ◽  
Author(s):  
S. Foner ◽  
E.J. McNiff ◽  
R.N. Shelton ◽  
R.W. McCallum ◽  
M.B. Maple
Keyword(s):  
Rare Earth ◽  
Critical Fields ◽  
Upper Critical Fields

Anisotropy of the lower and of the upper critical fields in Mg1−xAlxB2 single crystals

2007 ◽  
Vol 460-462 ◽  
pp. 614-615 ◽  
Author(s):  
A. Wisniewski ◽  
R. Puzniak ◽  
A. Bienias ◽  
M. Baran ◽  
J. Jun ◽  
...  
Keyword(s):  
Single Crystals ◽  
Critical Fields ◽  
Upper Critical Fields

Upper Critical Fields and Anisotropy of BaFe 1.9 Ni 0.1 As 2 Single Crystals

2009 ◽  
Vol 26 (9) ◽  
pp. 097401 ◽  
Author(s):  
Tao Qian ◽  
Shen Jing-Qin ◽  
Li Lin-Jun ◽  
Lin Xiao ◽  
Luo Yong-Kang ◽  
...  
Keyword(s):  
Single Crystals ◽  
Critical Fields ◽  
Upper Critical Fields
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