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) Powder XRD patterns for the starting β -Ga_1.8Fe_0.2O₃ sintered under a compressive pressure of 5 GPa and at different temperatures. The bars are the Bragg position of α -Ga₂O₃ (PDF# 06-0503). (b) Enlarged powder XRD patterns for the β -Ga_1.8Fe_0.2O₃ sintered at 2 GPa and 961 °C (upper, red), 5 GPa and 1045 °C (lower, black), and the inset shows the full scale of these patterns. The bars correspond to the Bragg positions of α -, β -, and spinel γ -structure with the PDF#s of 06-0503, 41-1103, and 20-0426 respectively. (c) Temperature and pressure diagram for the sintering of β -Ga_1.8Fe_0.2O₃. The dashed lines guide the eye. (d) An illustration of the sample assembly for the treatment at high temperature and high pressure.