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

TL;DR

This study investigates how pressure influences the magnetic and electronic states of Nd1-xSrxMnO3 compounds, revealing suppression of certain magnetic orders and induction of new states under pressure.

Contribution

It provides new insights into pressure-induced magnetic transitions and structural changes in Nd0.55Sr0.45MnO3 and Nd0.5Sr0.5MnO3, expanding understanding of their pressure-dependent phase behavior.

Findings

Pressure suppresses ferromagnetic metallic state in Nd0.55Sr0.45MnO3.

Pressure suppresses charge-ordering in Nd0.5Sr0.5MnO3.

Both compounds likely develop A-type antiferromagnetic state under pressure.

Abstract

Pressure effects on the electron transport and structure of Nd1-xSrxMnO3 (x = 0.45, 0.5) were investigated in the range from ambient to ~6 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.