Magnetic correlations of the quasi-one-dimensional half-integer spin-chain antiferromagnets Sr$M_2$V$_2$O$_8$ ($M$ = Co, Mn)

A. K. Bera; B. Lake; W. -D. Stein; S. Zander

doi:10.1103/PhysRevB.89.094402

paper

Magnetic correlations of the quasi-one-dimensional half-integer spin-chain antiferromagnets Sr $M_{2}$ V $_{2}$ O $_{8}$ ( $M$ = Co, Mn)

arXiv:1412.5009 · doi:10.1103/PhysRevB.89.094402

Abstract

Magnetic correlations of two iso-structural quasi-one-dimensional (1D) antiferromagnetic spin-chain compounds Sr $M_{2}$ V $_{2}$ O $_{8}$ ( $M$ = Co, Mn) have been investigated by magnetization and powder neutron diffraction. Two different collinear antiferromagnetic (AFM) structures, characterized by the propagation vectors, $k$ = (0 0 1) and $k$ = (0 0 0), have been found below $\sim$ 5.2 K and $\sim$ 42.2 K for the Co- and Mn-compounds, respectively. For the Mn-compound, AFM chains (along the $c$ axis) order ferromagnetically within the $ab$ plane, whereas, for the Co-compound, AFM chains order ferro-/antiferromagnetically along the $a / b$ direction. The critical exponent study confirms that the Co- and Mn-compounds belong to the Ising and Heisenberg universality classes, respectively. For both compounds, short-range spin-spin correlations are present over a wide temperature range above $T_{N}$ . The reduced ordered moments at base temperature (1.5 K) indicate the presence of quantum fluctuations in both compounds due to the quasi-1D magnetic interactions.

14 pages, 10 figures, 9 tables

Magnetic correlations of the quasi-one-dimensional half-integer spin-chain antiferromagnets Sr $M_{2}$ V $_{2}$ O $_{8}$ ( $M$ = Co, Mn)

Abstract

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Magnetic correlations of the quasi-one-dimensional half-integer spin-chain antiferromagnets SrM2​V2​O8​ (M = Co, Mn)

Abstract

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Cited by in corpus (11)

Magnetic correlations of the quasi-one-dimensional half-integer spin-chain antiferromagnets Sr $M_{2}$ V $_{2}$ O $_{8}$ ( $M$ = Co, Mn)