Dimensional crossover in Cr-doped 
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Co</mml:mi><mml:mn>3</mml:mn></mml:msub><mml:msub><mml:mi>BO</mml:mi><mml:mn>5</mml:mn></mml:msub></mml:mrow></mml:math>

Mariano, D. L.; Heringer, M.A.V.; Freitas, D. C.; Baggio‐Saitovitch, E.; Continentino, M. A.; Passamani, E. C.; Sánchez, D. R.

doi:10.1103/physrevb.102.064424

Cited by 8 publications

(8 citation statements)

References 38 publications

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“…The Debye temperature was calculated with the relation θ D 3 = 234 R /β, where R is the ideal gas constant (see Table ). The value of θ D = 119.2 K found for Co 2 InO 2 BO 3 is comparable with that found for other cobalt ludwigites. ,, …”

Section: Methodssupporting

confidence: 84%

“…The value of θ D = 119.2 K found for Co 2 InO 2 BO 3 is comparable with that found for other cobalt ludwigites. 3,4,18…”

Section: X-ray Diffractionmentioning

confidence: 99%

“…The magnetic interactions are strengthened, increasing the magnetic dimensionality from two-dimensional in Co 3 O 2 BO 3 to three-dimensional in Co 2.5 Cr 0.5 O 2 BO 3 . 4 On the other hand, the effects are completely different when the doping ion occupies other sites in addition to site 4. In Co 1.7 Mn 1.3 O 2 BO 3 , the Mn occupy all available sites, and a spinglass behavior is observed.…”

Section: Introductionmentioning

confidence: 99%

“…Despite the fact that the latter system contains three different magnetic ions, Co 2+ , Co 3+ , and Cr 3+ in HS states, some frustrated magnetic interactions are settled. The magnetic interactions are strengthened, increasing the magnetic dimensionality from two-dimensional in Co 3 O 2 BO 3 to three-dimensional in Co 2.5 Cr 0.5 O 2 BO 3 …”

Section: Introductionmentioning

confidence: 99%

“…The LS Co 3+ pound, as confirmed by low temperature-specific heat experiments. 4 By doping Co 3 O 2 BO 3 with different magnetic and nonmagnetic metals, new and exciting phenomena arise, such as spin-glass, magnetocaloric, and magnetic-dimensional crossover. 4,6,14 These interesting properties result from the ability of ludwigites to accommodate various metal ions at site 4.…”

Section: Introductionmentioning

confidence: 99%

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Increasing the Magnetic Order Temperature in Co₃O₂BO₃:In Ludwigite

Mariano,

Candela,

Freitas

et al. 2023

Inorg. Chem.

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Below 42 K, the homometallic Co 3 O 2 BO 3 ludwigite forms magnetic planes separated by nonmagnetic low-spin Co 3+ ions. The substitution of Co 3+ by other nonmagnetic ions enhances the magnetic interactions, raising the magnetic ordering temperature. However, depending on the nonmagnetic dopant ion, the remaining Co 3+ ions could adopt a high-spin state, creating magnetic frustration and lowering the magnetic transition temperature. Doping Co 3 O 2 BO 3 with nonmagnetic In 3+ ions favors the appearance of both high-spin Co 2+ and Co 3+ . The In 3+ ions preferentially occupy sites 4 and are randomly distributed in each site. The two-dimensional magnetic character of the parent compound, Co 3 O 2 BO 3 , is preserved, and the magnetic transition temperature increases to 47.8 K. Measurements of magnetization, which show metamagnetic transitions at low temperatures, and specific heat are consistent with ferrimagnetic ordering in this system. Thus, using these results and those reported in the literature, the effects caused by doping of Co 3 O 2 BO 3 with different nonmagnetic +3 ions are discussed in terms of the presence of high-spin Co 2+ and Co 3+ in the compounds.

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Section: Methodssupporting

confidence: 84%

“…The value of θ D = 119.2 K found for Co 2 InO 2 BO 3 is comparable with that found for other cobalt ludwigites. 3,4,18…”

Section: X-ray Diffractionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%