TY - JOUR
T1 - Quasipermanent magnets of high temperature superconductor
T2 - Temperature dependence
AU - Chen, In-Gann
AU - Liu, Jianxiong
AU - Ren, Yanru
AU - Weinstein, Roy
AU - Kozlowski, Gregory
AU - Oberly, Charles E.
PY - 1993/12/1
Y1 - 1993/12/1
N2 - We report on persistent field in quasipermanent magnets of high temperature superconductors. Magnets composed of irradiated Y1+Ba 2Cu3O7 trapped field Bt=1.52 T at 77 K and 1.9 T at lower temperature. However, the activation magnet limited B t at lower temperature. We present data on Jc(H,T) for unirradiated materials, and calculate Bt at various T. Based upon data at 65 K we calculate Bt in unirradiated single grains at 20 K, and find that 5.2 T will be trapped for grain diameter d∼1.2 cm, and 7.9 T for d=2.3 cm. Irradiated grains will trap four times these values.
AB - We report on persistent field in quasipermanent magnets of high temperature superconductors. Magnets composed of irradiated Y1+Ba 2Cu3O7 trapped field Bt=1.52 T at 77 K and 1.9 T at lower temperature. However, the activation magnet limited B t at lower temperature. We present data on Jc(H,T) for unirradiated materials, and calculate Bt at various T. Based upon data at 65 K we calculate Bt in unirradiated single grains at 20 K, and find that 5.2 T will be trapped for grain diameter d∼1.2 cm, and 7.9 T for d=2.3 cm. Irradiated grains will trap four times these values.
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U2 - 10.1063/1.109073
DO - 10.1063/1.109073
M3 - Article
AN - SCOPUS:0001378527
VL - 62
SP - 3366
EP - 3368
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 25
ER -