Competing Jahn-Teller distortions and ferrimagnetic ordering in the geometrically frustrated system Ni1xCuxCr2O4
نویسندگان
چکیده
Competing Jahn-Teller distortions combined with geometrical frustration give rise to a rich phase diagram as a function of x(Cu) and temperature in the spinel system Ni1xCuxCr2O4. The Jahn-Teller distortion of the end members acts in opposite ways with an elongation of the NiO4 tetrahedra resulting in a structural transition at TS1 = 317 K in NiCr2O4, but a flattening in the CuO4 tetrahedra at TS1 = 846 K in CuCr2O4, in both cases the
منابع مشابه
Magneto-structural coupling in \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$Ni_xZn_{1-x}Cr_2O_4$$\end{document}NixZn1-xCr2O4
Background Strong magneto-structural coupling in spinel structure results in rich behaviors such as the co-operative Jahn–Teller (JT) distortion and the spin liquid state. To study these effects, NixZn1−xCr2O4 system has been investigated here. These compounds are normal cubic spinel with a space group Fd3̄m above 310 K for NiCr2O4 and at above 12 K for ZnCr2O4. In the normal spinel structure, s...
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