We have carried out a detailed high-pressure investigation on the strongly correlated transition metal chalcogenide Cr3Te4 using Raman spectroscopy and XRD, which is ferromagnetic and metallic at ambient conditions. We find that the monoclinic structure remains stable up to 30 GPa, the highest pressure studied. The Cr-Te bond length and octahedral volume decrease drastically up to 7.6 GPa pressure. The A1g Raman mode shows a red shift up to 7.6 GPa, and the Eg Raman mode shows a sudden drop around the same pressure. Further low-temperature Raman spectroscopic investigation shows that the Raman modes soften at the ferromagnetic to antiferromagnetic phase transition. This suggests a change in the magnetic ordering at high pressure. Our Density Functional Theory (DFT) calculations reveal the change in magnetic ground state from ferromagnetic state to antiferromagnetic state above 7.6 GPa pressure, corroborating our experimental result.
@article{arxiv.2507.07650,
title = {Pressure induced ferromagnetic to antiferromagnetic phase transition in transition metal chalcogenide Cr$_{3}$Te$_4$},
author = {Asish Kumar Mishra and Souvick Chakraborty and Bidisha Mukherjee and Mrinmay Sahu and Suvashree Mukherjee and Shubham Purwar and Harekrishna Bhunia and S. Thirupathaiah and Peter Liermann and Satyabrata Raj and Goutam Dev Mukherjee},
journal= {arXiv preprint arXiv:2507.07650},
year = {2025}
}