Reduction of critical field for magnetic and orbital-ordering phase transition in impurity-substituted Nd$_{0.45}$Sr$_{0.55}$MnO$_3$ crystal

Y. Izuchi; M. Akaki; D. Akahoshi; H. Kuwahara

doi:10.1063/1.4866050

paper

Reduction of critical field for magnetic and orbital-ordering phase transition in impurity-substituted Nd $_{0.45}$ Sr $_{0.55}$ MnO $_{3}$ crystal

arXiv:1402.1543 · doi:10.1063/1.4866050

Abstract

We have investigated the Mn-site substitution effect in Nd $_{0.45}$ Sr $_{0.55}$ MnO $_{3}$ single crystal, which has an $A$ -type layered antiferromagnetic ( $A$ -AFM) phase with the 3 $d_{x^{2} - y^{2}}$ -type orbital-order. Substitution of Fe or Ga for Mn-site suppresses both the $A$ -AFM order and competing ferromagnetic (FM) correlation whereas Cr substitution suppresses only the $A$ -AFM order but reactivates the underlying FM correlation via double-exchange mechanism along the AFM coupled $c$ -direction. In Nd $_{0.45}$ Sr $_{0.55}$ Mn $_{0.95}$ Cr $_{0.05}$ O $_{3}$ , the $A$ -AFM state with the orbital-order is changed into the orbital-disordered three-dimensional FM metallic state by applying magnetic field of $μ_{0} H = 12$ T, which is much smaller than that of the parent compound Nd $_{0.45}$ Sr $_{0.55}$ MnO $_{3}$ .

5 pages, 4 figures, to appear in APL Materials

Reduction of critical field for magnetic and orbital-ordering phase transition in impurity-substituted Nd0.45​Sr0.55​MnO3​ crystal

Abstract

References in corpus (3)

Reduction of critical field for magnetic and orbital-ordering phase transition in impurity-substituted Nd $_{0.45}$ Sr $_{0.55}$ MnO $_{3}$ crystal