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 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. (b) A typical Rietveld refinement for the as-prepared α -Ga_1.8Fe_0.2O₃. Empty circles represent the experimental data, and solid line is the calculated one. The curve at the bottom is the difference between the experimental and calculated data, and the vertical lines represent the Bragg positions of α -Ga_{2− x}Fe_xO₃ and standard silicon. Inset shows the enlarged (104) Bragg peak of α -Ga_{2− x}Fe_xO₃, showing the systematic shift towards the lower angle upon increasing the Fe³⁺ content. (c) Refined lattice parameters ( a , c , and unit cell volume) as a function of the Fe³⁺ content for α -Ga_{2− x}Fe_xO₃.