Abstract
Pressure effects on the electron transport and structure of ${\mathrm{Nd}}_{1\ensuremath{-}x}{\mathrm{Sr}}_{x}{\mathrm{MnO}}_{3}$ $(x=0.45, 0.5)$ were investigated in the range from ambient to $\ensuremath{\sim}6\mathrm{GPa}.$ In ${\mathrm{Nd}}_{0.55}{\mathrm{Sr}}_{0.45}{\mathrm{MnO}}_{3},$ the low-temperature ferromagnetic metallic state is suppressed and a low-temperature insulating state is induced by pressure. In ${\mathrm{Nd}}_{0.5}{\mathrm{Sr}}_{0.5}{\mathrm{MnO}}_{3},$ 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.
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