Synthesis and magnetic properties of antiferromagnetic Li2MnO3 nanoribbons

► Single-crystalline Li2MnO3 nanoribbons are synthesized. ► Li2MnO3 nanoribbons present weak ferromagnetism, spin-glass-like behavior, and exchange bias effect. ► The magnetic behaviors of Li2MnO3 nanoribbons can be interpreted based on a core-shell model.