Crystal structure and partial Ising-like magnetic ordering of orthorhombic Dy2TiO5

Shamblin, Jacob; Calder, Stuart; Dun, Zhiling; Lee, Minseong; Choi, Eun Sang; Neuefeind, Joerg; Zhou, Haidong; Lang, Maik

doi:10.1103/PhysRevB.94.024413

Title: Crystal structure and partial Ising-like magnetic ordering of orthorhombic $D y_{2} Ti O_{5}$

Journal Article · Tue Jul 12 00:00:00 EDT 2016 · Physical Review B

DOI:https://doi.org/10.1103/PhysRevB.94.024413· OSTI ID:1346627

Shamblin, Jacob ^[1]; Calder, Stuart ^[2]; Dun, Zhiling ^[3]; Lee, Minseong ^[4]; Choi, Eun Sang ^[5]; Neuefeind, Joerg ^[6]; Zhou, Haidong ^[3]; Lang, Maik ^[7]

Univ. of Tennessee, Knoxville, TN (United States). Dept. of Nuclear Engineering. Dept. of Physics and Astronomy
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Quantum Condensed Matter Division
Univ. of Tennessee, Knoxville, TN (United States). Dept. of Physics and Astronomy
Florida State Univ., Tallahassee, FL (United States). Dept. of Physics. National High Magnet Field Lab.
Florida State Univ., Tallahassee, FL (United States). Dept. of Physics
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Chemical and Engineering Materials Division. Spallation Neutron Source
Univ. of Tennessee, Knoxville, TN (United States). Dept. of Nuclear Engineering

The structure and magnetic properties of orthorhombic Dy₂TiO₅ have been investigated using x-ray diffraction, neutron diffraction, and alternating current (ac)/direct current (dc) magnetic susceptibility measurements. In this paper, we report a continuous structural distortion below 100 K characterized by negative thermal expansion in the [0 1 0] direction. Neutron diffraction and magnetic susceptibility measurements revealed that two-dimensional (2D) magnetic ordering begins at 3.1 K, which is followed by a three-dimensional magnetic transition at 1.7 K. The magnetic structure has been solved through a representational analysis approach and can be indexed with the propagation vector k = [0 1/2 0]. The spin structure corresponds to a coplanar model of interwoven 2D “sheets” extending in the [0 1 0] direction. The local crystal field is different for each Dy³⁺ ion (Dy1 and Dy2), one of which possesses strong uniaxial symmetry indicative of Ising-like magnetic ordering. In conclusion, consequently, two succeeding transitions under magnetic field are observed in the ac susceptibility, which are associated with flipping each Dy³⁺ spin independently.

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Research Organization:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Tennessee, Knoxville, TN (United States); Florida State Univ., Tallahassee, FL (United States); Energy Frontier Research Centers (EFRC) (United States). Materials Science of Actinides (MSA)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES); Univ. of Tennessee (United States); National Science Foundation (NSF); State of Florida (United States)

Grant/Contract Number:: AC05-00OR22725; SC0001089; DMR-1350002; DMR-1157490

OSTI ID:: 1346627

Alternate ID(s):: OSTI ID: 1261704

Journal Information:: Physical Review B, Vol. 94, Issue 2; ISSN 2469-9950

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 2 works

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Title: Crystal structure and partial Ising-like magnetic ordering of orthorhombic $D y_{2} Ti O_{5}$