Investigating the existence of oxygen interstitial in CuCr1􀀀xMgxO2 [0.00 X 0.30] thermoelectric materials by X-Ray photoelectron spectroscopy [XPS] - Hoàng Văn, Dũng; Phạm, Anh; Lê, Thư; Nguyễn, Trương; Phan, Thắng; Trần, Vinh (Science & Technology Development Journal: Natural Sciences, 2021)