Abstract：Structural and magnetic properties are investigated for Fe1?xMnxV2O4 (0≤x ≤1) spinels. As orbital-active Fe2+ is substituted with Mn2+, the cubic-to-tetragonal transition TS1 and the tetragonal-to-orthorhombic transition TS2 gradually decrease. These structural transitions originate from the Fe2+ ferro-orbital order (F-OO). Below Yafet–Kittel (YK) magnetic transition TN2, V 3+ orbital order (V-OO) plays an important role on global structure. Here x=0.6 is a critical point. Fe2+ F-OO and V 3+ F-OO coexist for 0≤x ≤0.5. For x≥0.6, the orbital pattern of V 3+ is antiferro (AF)-OO, and Fe2+ F-OO disappears. Structural transition TS3, accompanied by YK magnetic transition TN2, decreases initially, and then increases at x=0.6. A scenario for the complex phase diagram arising from the cooperation or competition of Fe2+ and V 3+ orbitals is proposed.
. [J]. 中国物理快报, 2015, 32(02): 27501-027501.
ZHAO Ke-Han, WANG Yu-Hang, SHI Xiao-Lan, LIU Na, ZHANG Liu-Wan. Orbital Dilution Effect on Structural and Magnetic Properties of FeMnXV2O4. Chin. Phys. Lett., 2015, 32(02): 27501-027501.
2015, Vol. 32 
