Abstract
MgB{sub 2} single crystals with a sharp transition width ({delta}T{sub c}{approx}0.3 K) were grown by the ambient-pressure synthesis. The upper and lower critical fields, H{sub c2} and H{sub c1} were evaluated from the magnetization for the applied field {mu}{sub 0}H{<=}5 T parallel to the three crystallographic directions. The coherence length {xi} and the penetration depth {lambda} for each direction were deduced from these critical fields with a little assumption for H{sub c1}. The anisotropy ratio {gamma}{sub H}={xi}{sub c}/{xi}{sub ab} was estimated to be {approx}6.5 at 2.5 K and {approx}2.3 near T{sub c} (=37.6 K), and {gamma}{sub {lambda}}={lambda}{sub c}/{lambda}{sub ab}(=3.0{+-}0.2) to be almost constant over the range 2.5 K{<=}T<T{sub c}.
Citation Formats
Bando, H, Yamaguchi, Y, Shirakawa, N, and Yanagisawa, T.
Anisotropy in the upper and lower critical fields of MgB{sub 2} single crystals.
Netherlands: N. p.,
2004.
Web.
doi:10.1016/j.physc.2004.01.055.
Bando, H, Yamaguchi, Y, Shirakawa, N, & Yanagisawa, T.
Anisotropy in the upper and lower critical fields of MgB{sub 2} single crystals.
Netherlands.
https://doi.org/10.1016/j.physc.2004.01.055
Bando, H, Yamaguchi, Y, Shirakawa, N, and Yanagisawa, T.
2004.
"Anisotropy in the upper and lower critical fields of MgB{sub 2} single crystals."
Netherlands.
https://doi.org/10.1016/j.physc.2004.01.055.
@misc{etde_20618664,
title = {Anisotropy in the upper and lower critical fields of MgB{sub 2} single crystals}
author = {Bando, H, Yamaguchi, Y, Shirakawa, N, and Yanagisawa, T}
abstractNote = {MgB{sub 2} single crystals with a sharp transition width ({delta}T{sub c}{approx}0.3 K) were grown by the ambient-pressure synthesis. The upper and lower critical fields, H{sub c2} and H{sub c1} were evaluated from the magnetization for the applied field {mu}{sub 0}H{<=}5 T parallel to the three crystallographic directions. The coherence length {xi} and the penetration depth {lambda} for each direction were deduced from these critical fields with a little assumption for H{sub c1}. The anisotropy ratio {gamma}{sub H}={xi}{sub c}/{xi}{sub ab} was estimated to be {approx}6.5 at 2.5 K and {approx}2.3 near T{sub c} (=37.6 K), and {gamma}{sub {lambda}}={lambda}{sub c}/{lambda}{sub ab}(=3.0{+-}0.2) to be almost constant over the range 2.5 K{<=}T<T{sub c}.}
doi = {10.1016/j.physc.2004.01.055}
journal = []
issue = {1-2}
volume = {412-414}
journal type = {AC}
place = {Netherlands}
year = {2004}
month = {Oct}
}
title = {Anisotropy in the upper and lower critical fields of MgB{sub 2} single crystals}
author = {Bando, H, Yamaguchi, Y, Shirakawa, N, and Yanagisawa, T}
abstractNote = {MgB{sub 2} single crystals with a sharp transition width ({delta}T{sub c}{approx}0.3 K) were grown by the ambient-pressure synthesis. The upper and lower critical fields, H{sub c2} and H{sub c1} were evaluated from the magnetization for the applied field {mu}{sub 0}H{<=}5 T parallel to the three crystallographic directions. The coherence length {xi} and the penetration depth {lambda} for each direction were deduced from these critical fields with a little assumption for H{sub c1}. The anisotropy ratio {gamma}{sub H}={xi}{sub c}/{xi}{sub ab} was estimated to be {approx}6.5 at 2.5 K and {approx}2.3 near T{sub c} (=37.6 K), and {gamma}{sub {lambda}}={lambda}{sub c}/{lambda}{sub ab}(=3.0{+-}0.2) to be almost constant over the range 2.5 K{<=}T<T{sub c}.}
doi = {10.1016/j.physc.2004.01.055}
journal = []
issue = {1-2}
volume = {412-414}
journal type = {AC}
place = {Netherlands}
year = {2004}
month = {Oct}
}