Strain-Driven Bidirectional Spin Orientation Control in Epitaxial High Entropy Oxide Films.

ABSTRACT: High entropy oxides (HEOs), based on the incorporation of multiple-principal cations into the crystal lattice, offer the possibility to explore previously inaccessible oxide compositions and unconventional properties. Here it is demonstrated that despite the chemical complexity of HEOs external stimuli, such as epitaxial strain, can selectively stabilize certain magneto-electronic states. Epitaxial (Co_0.2 Cr_0.2 Fe_0.2 Mn_0.2 Ni_0.2 )₃ O₄ -HEO thin films are grown in three different strain states: tensile, compressive, and relaxed. A unique coexistence of rocksalt and spinel-HEO phases, which are fully coherent with no detectable chemical segregation, is revealed by transmission electron microscopy. This dual-phase co

SUBMITTER: Zhao Z 

PROVIDER: S-EPMC10520624 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature