Magnetic and spectral properties of the multisublattice oxides<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>SrY</mml:mi><mml:mn>2</mml:mn></mml:msub><mml:msub><mml:mi mathvariant="normal">O</mml:mi><mml:mn>4</mml:mn></mml:msub><mml:mo>:</mml:mo><mml:msup><mml:mrow><mml:mi>Er</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi

Малкин, Б. З.; Nikitin, S. I.; Mumdzhi, I. E.; Зверев, Д. Г.; Yusupov, R. V.; Gilmutdinov, I. F.; Batulin, Ruslan; Gabbasov, B. F.; Kiiamov, Airat; Adroja, D. T.; Young, Olga; Petrenko, O. A.

doi:10.1103/physrevb.92.094415

Cited by 33 publications

(39 citation statements)

References 33 publications

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“…30 For both sites, there is no obvious correspondence between the suggested anisotropy and the oxygen atom positions surrounding the magnetic ions, an observation that also applies to SrEr 2 O 4 . 31 We investigated the sensitivity of the g-tensor to small variations of the oxygen atom positions within their experimental uncertainty. For site 2, the effects on the g-factors and the orientation of the principal axes were negligible.…”

Section: A Crystal Structure and Crystal Field Excitationsmentioning

confidence: 99%

Absence of long-range order in the frustrated magnet SrDy2O4 due to trapped defects from a dimensionality crossover

et al. 2017

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Magnetic frustration and low dimensionality can prevent long range magnetic order and lead to exotic correlated ground states. SrDy 2 O 4 consists of magnetic Dy 3+ ions forming magnetically frustrated zig-zag chains along the c-axis and shows no long range order to temperatures as low as T = 60 mK. We carried out neutron scattering and AC magnetic susceptibility measurements using powder and single crystals of SrDy 2 O 4 . Diffuse neutron scattering indicates strong one-dimensional (1D) magnetic correlations along the chain direction that can be qualitatively accounted for by the axial next-nearest neighbour Ising (ANNNI) model with nearestneighbor and next-nearest-neighbor exchange J 1 = 0.3 meV and J 2 = 0.2 meV, respectively. Three-dimensional (3D) correlations become important below T * ≈ 0.7 K. At T = 60 mK, the short range correlations are characterized by a putative propagation vector k 1/2 = (0,2 ). We argue that the absence of long range order arises from the presence of slowly decaying 1D domain walls that are trapped due to 3D correlations. This stabilizes a low-temperature phase without long range magnetic order, but with well-ordered chain segments separated by slowly-moving domain walls.

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Section: A Crystal Structure and Crystal Field Excitationsmentioning

confidence: 99%

Absence of long-range order in the frustrated magnet SrDy2O4 due to trapped defects from a dimensionality crossover

et al. 2017

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“…Further, the anisotropic next-nearest-neighbor model was applied to SrHo 2 O 4 and the relevant parameters estimated [19]. For SrEr 2 O 4 , the latest estimates of the exchange and dipolar interactions were derived from the four-particle self-consistent model [20]. Despite all the above and the recent theoretical developments [21], it is fair to state that a full understanding of which interactions are dominant in each compound is still largely missing.…”

Section: Introductionmentioning

confidence: 99%

Evolution of spin correlations in SrDy2O4 in an applied magnetic field

et al. 2017

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The development of short-and long-range magnetic order induced in a frustrated zigzag ladder compound SrDy 2 O 4 by an applied field is studied using neutron-diffraction techniques. In zero field, SrDy 2 O 4 lacks long-range magnetic order down to temperatures as low as 60 mK, and the observed powder-neutron-diffraction (PND) patterns are dominated by very broad diffuse scattering peaks. Single-crystal neutron diffraction reveals that the zero-field magnetic structure consists of a collection of antiferromagnetic chains running along the c axis and that there is very little correlation between the chains in the ab plane. In an applied magnetic field, the broad diffuse scattering features in PND are gradually replaced by much sharper peaks, however, the pattern remains rather complex, reflecting the highly anisotropic nature of SrDy 2 O 4 . Single-crystal neutron diffraction shows that a moderate field applied along the b axis induces an up-up-down magnetic order associated with a 1 3 -magnetization plateau, in which magnetic correlation length in the ab plane is significantly increased, but it nevertheless remains finite. The resolution-limited k = 0 peaks associated with a ferromagnetic arrangement appear in powder and single-crystal neutron-diffraction patterns in fields of 2.5 T and above.

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“…Therefore, the second type of short-range order present in this material is one-dimensional in real space, and it persists over a wider temperature range-the onset of these correlations may also be observed with bulk heat capacity measurements as the broad peak around ∼3 K. The coexistence of the two types of diffuse scattering in SrHo 2 O 4 is likely to be the result of the presence of two crystallographically inequivalent sites for Ho 3+ in the unit cell. Other members of the SrLn 2 O 4 series, SrEr 2 O 4 and SrDy 2 O 4 , also show the coexistence of two markedly different types of magnetic ordering at low-temperatures [7,15,16].…”

Section: Introductionmentioning

confidence: 98%

Field-Induced Transitions in Highly Frustrated SrHo2O4

et al. 2019

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SrHo 2O 4 is a geometrically frustrated magnet in which the magnetic Ho 3 + ions are connected through a network of zigzag chains and coupled by several competing interactions. The Ho 3 + ions show a pronounced Ising anisotropy at low temperatures, and the spins on the two crystallographically inequivalent magnetic sites point along orthogonal crystallographic axes. Using single-crystal neutron diffraction, we report on the development of complex and highly anisotropic short- and long-range magnetic order in SrHo 2O 4 induced by an applied magnetic field. For H ‖ c , the diffuse scattering around the k = 0 positions is suppressed and above 0.5 T the spin structure for one of the Ho sites is long-range and ferromagnetic. For H ‖ b , planes of diffuse scattering at Q = ( h k ± l 2 ) are split by the field, and an up–up–down magnetic order associated with a 1/3-magnetisation plateau develops at 0.8 T. Further increasing the field above 1.2 T allows the second Ho site to also order in a long-range ferromagnetic structure.

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Magnetic and spectral properties of the multisublattice oxidesSrY2O4:Er3+and

Cited by 33 publications

References 33 publications

Absence of long-range order in the frustrated magnet SrDy2O4 due to trapped defects from a dimensionality crossover

Absence of long-range order in the frustrated magnet SrDy2O4 due to trapped defects from a dimensionality crossover

Evolution of spin correlations in SrDy2O4 in an applied magnetic field

Field-Induced Transitions in Highly Frustrated SrHo2O4

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