M. Kawakita, F. Ikawa, K. Yagi, M. Kano, T. Kubo, Y. Yokoyama, N. Katayama, Y. Okamoto, D. Hirai, K. Takenaka. "Composition evolution of crystal structure and negative thermal expansion in pyro-vanadate–phosphate Cu1.8Zn0.2V2–xPxO7." Applied Physics Letters (2025). https://doi.org/10.1063/5.0252063