Double spin-glass-like behavior and antiferromagnetic superexchange interaction between Fe3+ ions in α-Ga2− xFe xO3 (0 ≤ x ≤ 0.4)<xref ref-type="fn" rid="cpb142052fn1">*</xref>

Double spin-glass-like behavior and antiferromagnetic superexchange interaction between Fe³⁺ ions in α-Ga_{2− x}Fe_xO₃ (0 ≤ x ≤ 0.4)*

Lv Yi-Fei†, Xiang Jian-Yong†, Wen Fu-Sheng, Lv Wei-Ming, Hu Wen-Tao, Liu Zhong-Yuan

(a) The DSC signals at the temperatures near the exothermic peak for powder samples of α -Ga_{2− x}Fe_xO₃ with x = 0, 0.1, 0.2, 0.3, and 0.4 synthesized at 5 GPa and temperature of 800 °C for 1 hour. The curves are shifted on the Y axis for a better view. (b) The peak temperature and integral area (associated enthalpy change Δ H ) of the exothermic peak as a function of Fe content. (c) The powder XRD patterns of the products after one thermal cycle of α -Ga_{2− x}Fe_xO₃ ( x = 0, 0.1, 0.2, 0.3, 0.4). The bars show the Bragg position of β -Ga₂O₃ (PDF# 41-1103).