Pretransitional short-range ordering in a triangular lattice of Ising spin chains

Hardy, V.; Caignaert, V.; Pérez, Olivier; Hervé, L.; Sakly, Nahed; Raveau, B.; Seikh, Md. Motin; Damay, F.

doi:10.1103/physrevb.98.144414

Cited by 11 publications

(10 citation statements)

References 82 publications

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“…The spin chain oxides Sr4-xCaxCoMn2O9 (x=0 to 2.7) [see Ref [33][34][35][36][37] ] have an hexagonal structure closely related to that of Ca3CoMnO6, but their chains consist of trimeric units of two MnO6 octahedra sharing faces with one CoO6 trigonal prism (see Fig. 1).…”

Section: Introductionmentioning

confidence: 99%

Magnetodielectric coupling and multi-blocking effect in the Ising-chain magnet Sr2Ca2CoMn2O9

Basu

Sakly

Pautrat

et al. 2021

Journal of Applied Physics

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We have demonstrated magnetodielectric (MD) coupling in an Ising-chain magnet Sr2Ca2CoMn2O9 via detailed investigation of ac susceptibility and dielectric constant as a function of temperature, magnetic field, and frequency. Sr2Ca2CoMn2O9 consists of spin-chains made of the regular stacking of one CoO6 trigonal prism with two MnO6 octahedra. The (Co2+-Mn4+-Mn4+) unit stabilizes a (↑↓↑) spin-state along the chains that are distributed on a triangular lattice. This compound undergoes a partially disordered antiferromagnetic transition at TN ∼ 28 K. The dielectric constant exhibits a clear peak at TN only in the presence of an external magnetic field (H ≥ 5 kOe), evidencing the presence of MD coupling, which is further confirmed by field-dependent dielectric measurements. We argue that spatial inversion symmetry can be broken as a result of exchangestriction along each spin chain, inducing uncompensated local dipoles. At low temperatures, a dipolar relaxation phenomenon is observed, bearing strong similarities to the blocking effect typical of spin dynamics in this compound. Such a spin-dipole relationship is referred to as a "multiblocking" effect, in relation to the concept of magnetodielectric "multiglass" previously introduced for related materials.

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Section: Introductionmentioning

confidence: 99%

Magnetodielectric coupling and multi-blocking effect in the Ising-chain magnet Sr2Ca2CoMn2O9

Basu

Sakly

Pautrat

et al. 2021

Journal of Applied Physics

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“…Besides, the "m=1, n=3 members, Sr4-xCaxMn2CoO9 whose structure was first discovered for Sr4Mn2CoO9 [30] were recently shown to exhibit (for x=0-2) a great potential for the realization of new nanomagnets, i.e. single chain magnets (SCM) and single ion magnets (SIM) never observed before in condensed matter materials [31][32][33]. These features that are similar to those previously investigated in molecular compounds [34][35][36][37] open the route to potential applications in information storage and computation [38][39][40].…”

Section: Introductionmentioning

confidence: 99%

Oxygen over stoichiometry in the 2H-perovskite related structure: the route to a large family of cation deficient Ising chain oxides Sr_1+y[(Mn_1−xCo_x)_1−z□_z]O₃

et al. 2020

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“…Both of these compounds belong to the « O6 » subclass of the 2H-perovskite related materials, where the chains are made up of alternating one trigonal prism (TP) and one octahedron (Oh). Another series showing an alternation 1TP for 2 Oh along the chains (the « O9 » subclass) has gained a renewed interest in the recent years [43][44][45].…”

Section: Introductionmentioning

confidence: 99%

Physical properties of a quasi-1D Ising S = ½ spin system: Ba4CoPt2O9+Δ

Sakly

Caignaert

Pérez

et al. 2020

Journal of Magnetism and Magnetic Materials

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The spin chain oxide Ba 4 CoPt 2 O 9+Δ gathers several features that make it close to a 1D Ising S = 1/2 system: (i) it contains only one type of spins, which are associated to a Kramers doublet with a substantial gap from the first excited state; (ii) these spins exhibit a pronounced uniaxial anisotropy; (iii) their easy-axis is perfectly oriented along the spin chain direction; (iv) the spin chains remain uncoupled down to at least 2 K. It is reported that the magnetic susceptibility, the isothermal magnetization and the specific heat in fields up to 9 T can be well accounted for by the theoretical predictions for 1D Ising S = 1/2 systems, yielding consistent set of values for the Landé factors and the intrachain coupling. The presence of missing spins associated to the oxygen overstoichiometry is taken into account, as well as the polycrystalline nature of the samples which requires to consider angular averages of the anisotropic physical properties.

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Pretransitional short-range ordering in a triangular lattice of Ising spin chains

Cited by 11 publications

References 82 publications

Magnetodielectric coupling and multi-blocking effect in the Ising-chain magnet Sr2Ca2CoMn2O9

Magnetodielectric coupling and multi-blocking effect in the Ising-chain magnet Sr2Ca2CoMn2O9

Oxygen over stoichiometry in the 2H-perovskite related structure: the route to a large family of cation deficient Ising chain oxides Sr_1+y[(Mn_1−xCo_x)_1−z□_z]O₃

Physical properties of a quasi-1D Ising S = ½ spin system: Ba4CoPt2O9+Δ

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Pretransitional short-range ordering in a triangular lattice of Ising spin chains

Cited by 11 publications

References 82 publications

Magnetodielectric coupling and multi-blocking effect in the Ising-chain magnet Sr2Ca2CoMn2O9

Magnetodielectric coupling and multi-blocking effect in the Ising-chain magnet Sr2Ca2CoMn2O9

Oxygen over stoichiometry in the 2H-perovskite related structure: the route to a large family of cation deficient Ising chain oxides Sr1+y[(Mn1−xCox)1−z□z]O3

Physical properties of a quasi-1D Ising S = ½ spin system: Ba4CoPt2O9+Δ

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Oxygen over stoichiometry in the 2H-perovskite related structure: the route to a large family of cation deficient Ising chain oxides Sr_1+y[(Mn_1−xCo_x)_1−z□_z]O₃