Dy-V magnetic interaction and local structure bias on the complex spin and orbital ordering in Dy${}_{1\ensuremath{-}x}$Tb${}_{x}$VO${}_{3}$ ($x=0$ and 0.2)

Dy-V magnetic interaction and local structure bias on the complex spin and orbital ordering in Dy $_{1 - x}$ Tb $_{x}$ VO $_{3}$ ( $x = 0$ and 0.2)

J.-Q. Yan, H. B. Cao, M. A. McGuire, Y. Ren, B. C. Sales, and D. G. Mandrus

Phys. Rev. B 87, 224404 – Published 10 June 2013

Abstract

The spin and orbital ordering in Dy $_{1 - x}$ Tb $_{x}$ VO $_{3}$ ( $x = 0$ and 0.2) was studied by measuring x-ray powder diffraction, magnetization, specific heat, and neutron single-crystal diffraction. The results show that G-OO/C-AF and C-OO/G-AF phases coexist in Dy $_{0.8}$ Tb $_{0.20}$ VO $_{3}$ in the temperature range 2–60 K, and the volume fraction of each phase is temperature and field dependent. The ordering of Dy moments at $T$ * = 12 K induces a transition from G-OO/C-AF to a C-OO/G-AF phase. Magnetic fields suppress the long-range order of Dy moments and thus the C-OO/G-AF phase below $T$ *. The polarized moments induced at the Dy sublattice by external magnetic fields couple to the V 3d moments, and this coupling favors the G-OO/C-AF state. Also discussed is the effect of the Dy-V magnetic interaction and local structure distortion on the spin and orbital ordering in Dy $_{1 - x}$ Tb $_{x}$ VO $_{3}$ .

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Received 11 April 2013

DOI:https://doi.org/10.1103/PhysRevB.87.224404

Authors & Affiliations

J.-Q. Yan^1,2, H. B. Cao³, M. A. McGuire¹, Y. Ren⁴, B. C. Sales¹, and D. G. Mandrus^1,2

¹Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
²Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996, USA
³Quantum Condensed Matter Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
⁴X-ray Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA

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Vol. 87, Iss. 22 — 1 June 2013

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Physical Review B

covering condensed matter and materials physics

Dy-V magnetic interaction and local structure bias on the complex spin and orbital ordering in Dy $_{1 - x}$ Tb $_{x}$ VO $_{3}$ ( $x = 0$ and 0.2)

J.-Q. Yan, H. B. Cao, M. A. McGuire, Y. Ren, B. C. Sales, and D. G. Mandrus

Phys. Rev. B 87, 224404 – Published 10 June 2013

Abstract

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Physical Review B

covering condensed matter and materials physics

Dy-V magnetic interaction and local structure bias on the complex spin and orbital ordering in Dy1−xTbxVO3 (x=0 and 0.2)

J.-Q. Yan, H. B. Cao, M. A. McGuire, Y. Ren, B. C. Sales, and D. G. Mandrus

Phys. Rev. B 87, 224404 – Published 10 June 2013

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Dy-V magnetic interaction and local structure bias on the complex spin and orbital ordering in Dy $_{1 - x}$ Tb $_{x}$ VO $_{3}$ ( $x = 0$ and 0.2)