Diffuse magnetic neutron scattering in the highly frustrated double perovskite Ba2YRuO6

Nilsen, Gøran. J.; Thompson, Corey M.; Ehlers, Georg; Marjerrison, Casey A.; Greedan, John E.

doi:10.1103/PhysRevB.91.054415

Title: Diffuse magnetic neutron scattering in the highly frustrated double perovskite ${Ba}_{2} {YRuO}_{6}$

Abstract

Here we investigated diffuse magnetic scattering in the highly frustrated double perovskite Ba₂YRuO₆ using polarized neutrons. Consistent with previous reports, the material shows two apparent transitions at 47 and 36 K to an eventual type I face-centered-cubic magnetic ground state. The (100) magnetic reflection shows different behavior from the five other observed reflections upon heating from 1.8 K, with the former broadening well beyond the resolution limit near 36 K. Closer examination of the latter group reveals a small, but clear, increase in peak widths between 36 and 47 K, indicating that this regime is dominated by short-range spin correlations. Diffuse magnetic scattering persists above 47 K near the position of (100) to at least 200 K, consistent with strong frustration. Reverse Monte Carlo (RMC) modeling of the diffuse scattering from 45 to 200 K finds that the spin-spin correlations between nearest and next-nearest neighbors are antiferromagnetic and ferromagnetic, respectively, at temperatures near the upper ordering temperature, but both become antiferromagnetic and of similar magnitude above 100 K. The significance of this unusual crossover is discussed in light of the super-superexchange interactions between nearest and next-nearest neighbors in this material and the demands of type I order. The dimensionality ofmore »« less

Authors:

Nilsen, Gøran. J. ^[1]; Thompson, Corey M. ^[2]; Ehlers, Georg ^[3]; Marjerrison, Casey A. ^[4]; Greedan, John E. ^[2]

Inst. Laue-Langevin (ILL), Grenoble (France)
McMaster Univ., Hamilton, ON (Canada). Dept. of Chemistry and Chemical Biology. Brockhouse Inst. for Materials Research
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
McMaster Univ., Hamilton, ON (Canada). Dept. of Physics and Astronomy

Publication Date:: Mon Feb 23 00:00:00 EST 2015

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:: 1185787

Alternate Identifier(s):: OSTI ID: 1181397

Grant/Contract Number:: AC05-00OR22725

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review. B, Condensed Matter and Materials Physics

Additional Journal Information:: Journal Volume: 91; Journal Issue: 5; Journal ID: ISSN 1098-0121

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE

Citation Formats


                    Nilsen, Gøran. J., Thompson, Corey M., Ehlers, Georg, Marjerrison, Casey A., and Greedan, John E. Diffuse magnetic neutron scattering in the highly frustrated double perovskite Ba2YRuO6.  United States: N. p., 2015. 
Web.  doi:10.1103/PhysRevB.91.054415.

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                    Nilsen, Gøran. J., Thompson, Corey M., Ehlers, Georg, Marjerrison, Casey A., & Greedan, John E. Diffuse magnetic neutron scattering in the highly frustrated double perovskite Ba2YRuO6.  United States.  https://doi.org/10.1103/PhysRevB.91.054415

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                    Nilsen, Gøran. J., Thompson, Corey M., Ehlers, Georg, Marjerrison, Casey A., and Greedan, John E. Mon .  
"Diffuse magnetic neutron scattering in the highly frustrated double perovskite Ba2YRuO6".  United States.  https://doi.org/10.1103/PhysRevB.91.054415.  https://www.osti.gov/servlets/purl/1185787.

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@article{osti_1185787,

  title        = {Diffuse magnetic neutron scattering in the highly frustrated double perovskite Ba2YRuO6},

  author       = {Nilsen, Gøran. J. and Thompson, Corey M. and Ehlers, Georg and Marjerrison, Casey A. and Greedan, John E.},

  abstractNote = {Here we investigated diffuse magnetic scattering in the highly frustrated double perovskite Ba2YRuO6 using polarized neutrons. Consistent with previous reports, the material shows two apparent transitions at 47 and 36 K to an eventual type I face-centered-cubic magnetic ground state. The (100) magnetic reflection shows different behavior from the five other observed reflections upon heating from 1.8 K, with the former broadening well beyond the resolution limit near 36 K. Closer examination of the latter group reveals a small, but clear, increase in peak widths between 36 and 47 K, indicating that this regime is dominated by short-range spin correlations. Diffuse magnetic scattering persists above 47 K near the position of (100) to at least 200 K, consistent with strong frustration. Reverse Monte Carlo (RMC) modeling of the diffuse scattering from 45 to 200 K finds that the spin-spin correlations between nearest and next-nearest neighbors are antiferromagnetic and ferromagnetic, respectively, at temperatures near the upper ordering temperature, but both become antiferromagnetic and of similar magnitude above 100 K. The significance of this unusual crossover is discussed in light of the super-superexchange interactions between nearest and next-nearest neighbors in this material and the demands of type I order. The dimensionality of the correlations is addressed by reconstructing the scattering in the (hk0) plane using the RMC spin configurations. This indicates that one-dimensional spin correlations dominate at temperatures close to the first transition. In addition, a comparison between mean-field calculations and (hk0) scattering implies that further neighbor couplings play a significant role in the selection of the ground state. Finally, the results and interpretation are compared with those recently published for monoclinic Sr2YRuO6, and similarities and differences are emphasized.},

  doi          = {10.1103/PhysRevB.91.054415},

  journal      = {Physical Review. B, Condensed Matter and Materials Physics},

  number       = 5,

  volume       = 91,

  place        = {United States},

  year         = {Mon Feb 23 00:00:00 EST 2015},

  month        = {Mon Feb 23 00:00:00 EST 2015}

}

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Works referencing / citing this record:

The complex non-collinear magnetic orderings in Ba ₂ YOsO ₆ : a new approach to tuning spin-lattice interactions and controlling magnetic orderings in frustrated complex oxides
journal, August 2019

Fang, Yue-Wen; Yang, Ruihan; Chen, Hanghui
Journal of Physics: Condensed Matter, Vol. 31, Issue 44
DOI: 10.1088/1361-648x/ab31e0

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Title: Diffuse magnetic neutron scattering in the highly frustrated double perovskite Ba 2 YRuO 6

Abstract

Citation Formats

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Title: Diffuse magnetic neutron scattering in the highly frustrated double perovskite ${Ba}_{2} {YRuO}_{6}$

Route to high Néel temperatures in 4 $d$ and 5 $d$ transition metal oxides
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Radial integrals for the magnetic form factor of 5 d transition elements
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Systematic analysis of spectroscopic characteristics of heavy transition metal ions with 4dN and 5dN (N=1…10) electronic configurations in a free state
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The crystal and magnetic structures of Sr2YRuO6
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Disordered materials studied using neutron polarization analysis on the multi-detector spectrometer, D7
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The crystal and magnetic structures of Sr2LuRuO6, Ba2YRuO6, and Ba2LuRuO6
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spinvert: a program for refinement of paramagnetic diffuse scattering data
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Effect of Spin–Orbit Interaction on (4 d ) ³ - and (5 d ) ³ -Based Transition-Metal Oxides
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Ordered double perovskites – a group-theoretical analysis
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Superexchange interaction and symmetry properties of electron orbitals
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