Traversing the pyrochlore stability diagram: Microwave-assisted synthesis and discovery of mixed<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>B</mml:mi></mml:math>-site<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mrow><mml:mi>L</mml:mi><mml:mi>n</mml:mi></mml:mrow><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi>InSbO</mml:mi><mml:mn>7</mml:mn></mml:msub></mml:mrow></mml:math>family

Ortiz, Brenden R.; Sarte, Paul M.; Pokharel, Ganesh; García, M. Quintana; Marmolejo, Marcos; Wilson, Stephen D.

doi:10.1103/physrevmaterials.6.094403

Cited by 3 publications

(3 citation statements)

References 366 publications

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“…These observations point to weak magnetic interactions between the diluted magnetic moments, possibly from dipolar origin, and undetected through neutron scattering. These results are very similar to those reported in Pr 2 InSbO 7 [32] where a trivial non-magnetic singlet state was proposed.…”

supporting

confidence: 91%

“…The conditions to obtain the above features appear however to be rather drastic. In Tb 2 ScNbO 7 where the B site is also occupied by a mixture of different charged ions In 3+ and Sb 5+ [32], the disorder is too strong, due to a large difference in their ionic radii. No clear spin glass transition is observed, similarly to other Tb pyrochlores with some level of disorder [49], with the exception of Tb 2 Hf 2 O 7 [27].…”

Section: Discussionmentioning

confidence: 99%

“…These defects become more numerous when the ratio of the R 3+ over B 4+ ionic radius is close to 1.46, the value below which the pyrochlore structure is destabilized towards the fluorite one. This ratio is equal to 1.50 for the average Nb 5+ /Sc 3+ ionic radius in the stability region of the pyrochlore structure [7,32].…”

Section: Disorder and Structural Properties Of Tb2scnbo7mentioning

confidence: 92%

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Collective magnetic state induced by charge disorder in the non-Kramers rare-earth pyrochlore Tb$_{2}$ScNbO$_{7}$

Alexanian¹,

Lhotel²,

Ballou³

et al. 2023

Preprint

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Geometrical frustration, as in pyrochlore lattices made of corner-sharing tetrahedra, precludes the onset of conventional magnetic ordering, enabling the stabilization of fluctuating spin states at low temperature. Disorder is a subtle ingredient that can modify the nature of these exotic non-ordered phases. Here, we study the interplay between disorder and magnetic frustration in the new pyrochlore Tb2ScNbO7 where the non magnetic site presents a charge disorder Nb 5+ /Sc 3+ . Its quantification with sophisticated diffraction techniques (electrons, X-rays, neutrons) allows us to estimate the distribution of the splitting of the magnetic Tb 3+ non-Kramers ground state doublets and to compare it with excitations measured in inelastic neutron scattering. Combining macroscopic and neutron scattering measurements, we show that a clear spin glass transition at 1 K stems out while retaining strong spin liquid correlations. Our results suggest that Tb2ScNbO7 stabilizes one of the novel disorder induced quantum spin liquid or topological glassy phases recently proposed theoretically.

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confidence: 91%