Two-dimensional (2D) magnetic materials have attracted considerable interest owing to their potential applications in spintronics and fundamental investigations into low-dimensional magnetism. Cr2Te3, a quasi 2D non van der Waals magnet, exhibits a complex magnetic phase diagram due to competing magnetic interactions within and between layers. However, the precise nature and evolution of these magnetic phases remain unclear. Here, we utilize an ultrahigh-sensitive composite magnetoelectric technique, which probes the ac magnetostrictive coefficient, to systematically explore the temperature magnetic field phase diagram of Cr2Te3 single crystals. Our results reveal the coexistence of multiple magnetic phases, including canted ferromagnetic, antiferromagnetic, and paramagnetic states. Another canted ferromagnetic phase and a possible triple point have been proposed. The updated phase diagram provides deeper insights into the specific spin configurations associated with each phase. These findings also highlight the decoupled magnetic ordering between the Cr1/Cr3 layers and the Cr2 layer near the magnetic ordering temperature.
@article{arxiv.2503.20261,
title = {Magnetic phase diagram of Cr2Te3 revisited by ac magnetostrictive coefficient},
author = {Long Zhang and Zhongzhu Jiang and Yugang Zhang and Jing Zhang and Aifeng Wang and Mingquan He and Yuping Sun and Xuan Luo and Yisheng Chai},
journal= {arXiv preprint arXiv:2503.20261},
year = {2025}
}