Transport and structural study of pressure-induced magnetic states in Nd0.55Sr0.45MnO3 and Nd0.5Sr0.5MnO3

[摘要] Pressure effects on the electron transport and structure of Nd1-xSrxMnO3 (x=0.45, 0.5) were investigated in the range from ambient to similar to6 GPa. In Nd0.55Sr0.45MnO3, the low-temperature ferromagnetic metallic state is suppressed and a low-temperature insulating state is induced by pressure. In Nd0.5Sr0.5MnO3, the CE-type antiferromagnetic charge-ordering state is suppressed by pressure. Under pressure, both samples have a similar electron-transport behavior although their ambient ground states are much different. It is surmised that pressure induces an A-type antiferromagnetic state at low temperature in both compounds.

[发布日期] 2003-12-01

[关键词] PEROVSKITE MANGANITES;PHASE-TRANSITION;X-RAY;CHARGE;ND1-XSR(X)MNO3;ND1-XSRXMNO3;TEMPERATURE;BANDWIDTH;FIELD