Short-range and long-range magnetic ordering in <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>α</mi><mo>−</mo><mrow><msub><mrow><mi mathvariant="normal">CuV</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow><mrow><msub><mrow><mi mathvariant="normal">O</mi></mrow><mrow><mn>6</mn></mrow></msub></mrow></math></span>

A. N. Vasil’ev; L. A. Ponomarenko; A. I. Smirnov; E. V. Antipov; Yu. A. Velikodny; M. Isobe; Y. Ueda

doi:10.1103/PhysRevB.60.3021

Short-range and long-range magnetic ordering in $α - {CuV}_{2} O_{6}$

A. N. Vasil’ev, L. A. Ponomarenko, A. I. Smirnov, E. V. Antipov, Yu. A. Velikodny, M. Isobe, and Y. Ueda

Phys. Rev. B 60, 3021 – Published 1 August 1999

Abstract

Magnetic properties of the triclinic copper vanadate $α - {CuV}_{2} O_{6}$ with linear chains of edge-sharing ${CuO}_{6}$ octahedra were studied by magnetic susceptibility and electron-spin-resonance measurements. The broad maximum of a magnetic susceptibility at $T_{M} = 44 K$ corresponding to the intrachain exchange interaction $J = 34 K$ indicates one-dimensional short-range magnetic ordering within the chains. Three-dimensional long-range antiferromagnetic ordering takes place at $T_{N} = 24 K,$ suggesting a rather large value for the interchain exchange interaction $J_{⊥} \sim 16.5 K .$ The energy gap found in the antiferromagnetic resonance spectrum 76 GHz agrees with the spin-flop magnetic-field value of about 2.7 T.