Temperature and frequency dependence of the dissipated energy density in MgB/sub 2/ bulk
作者： D. Botta , A. Chiodoni , R. Gerbaldo , L. Gozzelino , F. Laviano
关键词:
摘要: This paper reports on an ac susceptometric analysis to evaluate the losses as a function of frequency and temperature at different external dc applied fields in MgB/sub 2/ twin bulk samples. The two investigated samples come from same preparation batch. In agreement with partial results literature, it turns out that exhibit, frequency, nonmonotonic behavior is strongly temperature-dependent. lower range analyzed temperatures are significantly affected by high-energy heavy ion irradiation. These last findings put forward puzzling questions about creep dynamics 2/. Finally issue comparison Ag sheathed/Bi2223 tapes addressed. made means measurements once performed apparatus. It that, taking into account expected differences due fields, absolute values dissipated energy density Ag/Bi2223 monofilamentary tape magnitude order exhibit similar behavior.
harvard.edu
sci-hub.se 参考文章(10)
H Luo, X F Wu, C M Lee, T Yang, X Leng, Y Liu, L Qiu, H M Luo, Z H Wang, S Y Ding, AC losses of superconductor MgB2 Superconductor Science and Technology. ,vol. 15, pp. 370- 374 ,(2002) , 10.1088/0953-2048/15/3/317
GIOVANNI GIUNCHI, HIGH DENSITY MgB2 OBTAINED BY REACTIVE LIQUID Mg INFILTRATION International Journal of Modern Physics B. ,vol. 17, pp. 453- 460 ,(2003) , 10.1142/S0217979203016091
E. Mezzetti, E. Crescio, R. Gerbaldo, G. Ghigo, L. Gozzelino, B. Minetti, L. Gherardi, L. Martini, G. Cuttone, A. Rovelli, Modification of bulk properties of Bi/sub 1.8/Pb/sub 0.33/Sr/sub 1.87/Ca/sub 2/Cu/sub 3/O/sub y/ tapes by means of ion induced surface trenches IEEE Transactions on Applied Superconductivity. ,vol. 9, pp. 1872- 1875 ,(1999) , 10.1109/77.784823
R. Prozorov, A. Shaulov, Y. Wolfus, Y. Yeshurun, FREQUENCY DEPENDENCE OF THE LOCAL AC MAGNETIC RESPONSE IN TYPE-II SUPERCONDUCTORS Physical Review B. ,vol. 52, pp. 12541- 12544 ,(1995) , 10.1103/PHYSREVB.52.12541
E. Mezzetti, D. Botta, R. Cherubini, A. Chiodoni, R. Gerbaldo, G. Ghigo, G. Giunchi, L. Gozzelino, B. Minetti, Low energy proton irradiation on MgB2 bulk Physica C-superconductivity and Its Applications. ,vol. 372, pp. 1277- 1282 ,(2002) , 10.1016/S0921-4534(02)00992-9
P Fabbricatore, S Farinon, F Gömöry, S Innocenti, Ac losses in multifilamentary high-TCtapes due to a perpendicular ac magnetic field Superconductor Science and Technology. ,vol. 13, pp. 1327- 1337 ,(2000) , 10.1088/0953-2048/13/9/308
Fedor Gömöry, Laura Gherardi, Giovanni Crotti, Daniela Bettinelli, Luciano Martini, Luigi Bigoni, Sergio Zannella, Comparison of transport and magnetic AC losses in Bi-2223/Ag tapes — the role of superconducting core geometry Physica C-superconductivity and Its Applications. ,vol. 310, pp. 168- 172 ,(1998) , 10.1016/S0921-4534(98)00455-9
D Botta, A Chiodoni, R Gerbaldo, G Giunchi, G Ghigo, L Gozzelino, F Laviano, B Minetti, E Mezzetti, Temperature, field and current dependence of the flux creep activation energy in bulk MgB2 Physica C-superconductivity and Its Applications. ,vol. 369, pp. 232- 235 ,(2002) , 10.1016/S0921-4534(01)01248-5
G. Ghigo, D. Andreone, D. Botta, A. Chiodoni, R. Gerbaldo, L. Gozzelino, F. Laviano, M. Negro, E. Mezzetti, B. Minetti, Thermally activated creep and radiation hardness of MgB/sub 2/ bulk material IEEE Transactions on Applied Superconductivity. ,vol. 13, pp. 3518- 3521 ,(2003) , 10.1109/TASC.2003.812385
J. F. Ziegler, J. P. Biersack, The stopping and range of ions in solids ,(1985)