Reversal magnetization and exchange bias effect of the nanocrystalline Yb1-xPrxCrO3 solid solution

Mendivil, L. F.; Alvarado-Rivera, J.; Verdín, E.; Dı́az, José A.; Mata, J.; Conde, A.; Durán, A.

doi:10.1007/s00339-020-03738-5

Cited by 13 publications

(2 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The dM/dT data distinctly show a sharp drop below ∼5.6 K, and a clear change in the curvature of M(T) at T * in the temperature range of 22 K to 5.6 K. This weak hump in M(T) could be associated with the magnetic degree of freedom, which leads to a significant deviation in magnetic susceptibility from the Curie-Weiss behavior at low temperature (see figure 4(c)). It is interesting to note that a similar type of weak hump in magnetization data has been seen for other Pr based perovskites PrBO 3 (B = transition metals) at low temperature where the rare-earth spins order in an AFM arrangement [26][27][28][29]. The continuous increase in magnetization below T * could be associated with a minor paramagnetic (PM) impurity phase consisting of noninteracting and isolated Pr or Ir moments.…”

Section: Magnetization Studysupporting

confidence: 54%

“…4 (c)]. It is interesting to note that a similar type of weak hump in magnetization data has been seen for other Pr based perovskites PrBO 3 (B = transition metals) at low temperature where the rare-earth spins order in an AFM arrangement [27,28,29,30]. The continuous increase in magnetization below T * could be associated with a minor paramagnetic (PM) impurity phase consisting of non-interacting and isolated Pr or Ir moments.…”

Section: Magnetization Studymentioning

confidence: 59%

See 1 more Smart Citation

Fluorite-related iridate Pr₃IrO₇: crystal growth, structure, magnetism, thermodynamic, and optical properties

Kumar¹,

Köpf²,

A.³

et al. 2022

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

Spin-orbit coupling in heavy 5$d$ metal oxides, in particular, iridates have received tremendous interest in recent years due to the realization of exotic electronic and magnetic phases. Here, we report the synthesis, structural, magnetic, thermodynamic, and optical properties of the ternary iridate Pr$_3$IrO$_7$. Single crystals of Pr$_3$IrO$_7$ have been grown by the KF flux method. Structural analysis shows that Pr$_3$IrO$_7$ crystallizes in an orthorhombic phase with $Cmcm$ symmetry. The electron energy loss spectroscopy study indicates that Pr is in a 3+ valence state, which implies a 5+ oxidation state of Ir. Magnetization data measured at high and low magnetic fields do not exhibit any bifurcation between $M_{ZFC}$ and $M_{FC}$, however, a weak hump in $M(T)$ is observed at $T^*$$\sim$10.4~K. The specific heat data reveal two maxima at $\sim$253 K and $\sim$4.8 K. The optical conductivity $\sigma_1(\omega)$ spectrum shows 26 infrared-active phonon modes and reveals an insulating behavior with an optical gap $\Delta_{OP}$ of size $\sim$500~meV. During cooling down, the temperature-dependent reflectivity spectrum reveals seven extra phonon modes below the structural phase transition ($\sim$ 253 K). An anomaly is observed at around $T^*$ in the temperature evolution of infrared-active mode frequencies suggesting the presence of significant spin-phonon coupling in the system.

show abstract

Section: Magnetization Studysupporting

confidence: 54%

Section: Magnetization Studymentioning

confidence: 59%

Fluorite-related iridate Pr₃IrO₇: crystal growth, structure, magnetism, thermodynamic, and optical properties

Kumar¹,

Köpf²,

A.³

et al. 2022

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

show abstract

Negative magnetization in the medium-entropy Pr1/3Dy1/3Ho1/3CrO3 and PrCrO3 ceramics: comparative crystal structure, optic, dielectric and magnetic properties

Durán,

Reguera,

Mendivil

et al. 2023

J Mater Sci

View full text Add to dashboard Cite

In recent years, raising investigation activity in entropy-stabilized ceramic oxides has been driven by their innovative approach to designing a thermodynamically stable multi-element system, which provides a new focus on investigating complex functional materials. Especially, complex and singular physical properties of orthochromite have generated rising research in recent years. Of this family, the PrCrO3, DyCrO3, and HoCrO3 systems are particularly interesting since, below Néel temperature (TN), they present negative magnetization in the ZFC mode. Here, we have employed this approach and designed a medium-entropy (MECs) Pr1/3Dy1/3Ho1/3CrO3 (PDH) ceramic to study not only whether the magnetic characteristics prevail, but also the state of optical and dielectric properties of this new compound. In addition, the physical properties studied were compared with the single PrCrO3 (PC) compound. These compounds were synthesized through a facile combustion synthesis route. The X-ray diffraction analysis, energy-dispersive X-ray spectroscopy (EDS), and surface scanning elemental mapping reveal that a single phase is stabilized and equimolar cations are homogeneously distributed in the PDH-MECs. We found that the disorder of cations in the A-site of the structure has no significant effect on the optical transition in the visible electromagnetic region and dielectric properties with respect to the simple compound PC. In contrast, the magnetic properties are strongly affected in the MECs-PDH compound. We found that the TN is tuned through the O–Cr–O angles and below the antiferromagnetic transition. The results suggest that the negative magnetization in the ZFC mode is an intrinsic feature in these compounds since the negative ZFC susceptibility below TN predominates despite the cationic disorder. Furthermore, their negative magnetic mechanism in both the MECs-PDH and PC compounds are discussed in terms of the Γ2(FxCyGz) magnetic configuration. Graphical abstract

show abstract

Negative magnetization in the zero field-cooled and exchange-bias effect in Cu-doped PrCrO3

Mendivil

Alvarado-Rivera

Tavizón

et al. 2021

J Mater Sci: Mater Electron

View full text Add to dashboard Cite

Reversal magnetization and exchange bias effect of the nanocrystalline Yb1-xPrxCrO3 solid solution

Cited by 13 publications

References 46 publications

Fluorite-related iridate Pr₃IrO₇: crystal growth, structure, magnetism, thermodynamic, and optical properties

Fluorite-related iridate Pr₃IrO₇: crystal growth, structure, magnetism, thermodynamic, and optical properties

Negative magnetization in the medium-entropy Pr1/3Dy1/3Ho1/3CrO3 and PrCrO3 ceramics: comparative crystal structure, optic, dielectric and magnetic properties

Negative magnetization in the zero field-cooled and exchange-bias effect in Cu-doped PrCrO3

Contact Info

Product

Resources

About

Reversal magnetization and exchange bias effect of the nanocrystalline Yb1-xPrxCrO3 solid solution

Cited by 13 publications

References 46 publications

Fluorite-related iridate Pr3IrO7: crystal growth, structure, magnetism, thermodynamic, and optical properties

Fluorite-related iridate Pr3IrO7: crystal growth, structure, magnetism, thermodynamic, and optical properties

Negative magnetization in the medium-entropy Pr1/3Dy1/3Ho1/3CrO3 and PrCrO3 ceramics: comparative crystal structure, optic, dielectric and magnetic properties

Negative magnetization in the zero field-cooled and exchange-bias effect in Cu-doped PrCrO3

Contact Info

Product

Resources

About

Fluorite-related iridate Pr₃IrO₇: crystal growth, structure, magnetism, thermodynamic, and optical properties

Fluorite-related iridate Pr₃IrO₇: crystal growth, structure, magnetism, thermodynamic, and optical properties