We report experim.nta.d.scovery of ta.ta.um.polyhyd.id. *** wa. synthesized.und.r highpressure a.d.high-tem.era.ure cond.tions using d.a.ond.a.vil cell com.ined.with in situ high-pressure la.er hea.ing *** supercond....
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We report experim.nta. d.scovery of ta.ta.um.polyhyd.id. *** wa. synthesized.und.r highpressure a.d.high-tem.era.ure cond.tions using d.a.ond.a.vil cell com.ined.with in situ high-pressure la.er hea.ing *** supercond.ctivity wa. investiga.ed.via.resista.ce m.a.urem.nts a. *** highest supercond.cting tra.sition tem.era.ure T_(c)wa. found.to be~30 K a. 197 GPa.in the sa.ple tha. wa. synthesized.a. the sa.e pressure with~2000 K *** tra.sitions a.e shifted.to low tem.era.ure upon a.plying m.0}netic field. tha. support the supercond.ctivity *** upper critica. field.a. zero tem.era.ureμ_0H_(c2)(0)of the supercond.cting pha.e is estim.0}ed.to be~20 T tha. correspond. to Ginzburg-La.d.1} coherent length~40 *** results suggest tha. the supercond.ctivity m.0} a.ise from.143d.pha.e of Ta._(3).It is,for the first tim. to our best knowled.e,experim.nta. rea.iza.ion of supercond.cting hyd.id.s for the VB group of tra.sition m.ta.s.
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