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9篇 您的检索式：作者名="Syamaprasad"

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		题名	作者	年代	出处	被引量
	1	An overview on iron based superconductors显示文摘	P M Aswathy J B Anooja P M Sarun U Syamaprasad	2010	Superconductor Science and Technology2010，，7：	1
	2	Multilayer Capacitor Ceramics in the PMN-PT-BT System:Effect of MgO and 4PbO @ B2O3 Additions显示文摘	Syamaprasad U Sheeja Nair A R Sarma M S		0，，：	1
	3	Prospects for MgB2 superconductors for magnet application 显示文摘	Vinod K Kumar A R G Syamaprasad U	2007	Superconductor Science and Technology2007，20，：	1
	4	effect of MgO and 4PbO·B2O3 additions显示文摘	Syamaprasad U Sheeja hair A R Sarma M S	1997	J Mater Sci:Mater in Electronics1997，8，3：	1
	5	Dielectric properties of the Ba1-xSrxTiO3 system显示文摘	Syamaprasad U Galgali R K Mohanty B C		0，，07：	1
	6	Dielectric properties of the Ba1-xSrxTiO3 system 显示文摘	Syamaprasad U Galgali R K Mohanty B C	1988	Materials Letters1988，7，：	1
	7	Prospects for MgB2 Superconductors for Magnet Application 显示文摘	Vinod K Abhilash R G Kumar Syamaprasad U	2007	Supercond Sci Technol2007，20，：	1
	8	Multilayer capacitor ceramics in the PMN-PT-BT system: effect of MgO and 4PbO · B2O3 additions 显示文摘	Syamaprasad U Sheejanair A R Sarma M S	1997	J Mater Sci Mater Electron1997，8，：	1
	9	Doping dependent metal to insulator transition in the(Bi,Pb)-2212 system:The evolution of structural and electronic properties with europium substitution显示文摘The present work investigates the effect of europium substitution on the(Bi,Pb)-2212 system in the concentration range 0.5 ≤ x ≤ 1.0.Phase analysis and lattice parameter calculations on the powder diffraction data and the elemental analysis of EDX show that the Eu atoms are successfully substituted into the(Bi,Pb)-2212 system.Resistivity measurements(64-300 K) reveal that the system exhibits superconductivity at x ≤ 0.5 and semiconductivity at x > 0.5.With the complete suppression of superconductivity which is known to be a quasi-two dimensional phenomenon in these materials,a metal to insulator transition takes place at x = 0.6 and the predominant conduction mechanism is found to be variable range hopping between localized states,resulting in macroscopic semiconducting behaviour.The results of electrical and structural properties of the doped(Bi,Pb)-2212 compounds suggest that the decrease of charge carrier concentration and the induced structural disorder are the more effective and dominant mechanisms in the origin of the metal to insulator transition and suppression of superconductivity due to Eu substitution at its Sr site.	Shabna Razia Sarun Pallian Murikoli Vinu Surendran Syamaprasad Upendran	2009	Chinese Physics B2009，18，9：	0

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