Magneto Transport Anomaly of Bismuth Substituted (La, Na) MnO3

Mendonca, Lozil Denzil; D’Souza, Anita; Murari, M.S.; Daivajna, Mamatha D.

doi:10.1007/s10948-020-05430-4

Cited by 9 publications

(2 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This behavior may be associated with the quantum paraelectricity of the CTO. A CTO is a quantum paraelectric band insulator with a direct gap of 3.3 eV, where titanium ion is in 4 + valence state Ti 4+ :3d 0 with total spin S = 0 [25][26][27]. The results suggest a wide hysteresis loop with high coercivity and remanent magnetization for the CaMnO 3 compound, typical of ferromagnetic materials.…”

Section: Resultsmentioning

confidence: 99%

Mn Ion Influence on the Structural and Magnetic Response of CaTi1−xMnxO3

et al. 2021

View full text Add to dashboard Cite

This paper describes the CaTi 1−x Mn x O 3 (x = 0.0, 0.4, 0.6, 0.8 and 1.0) system synthesis using the solid-state reaction (SSR) method. The structural, morphological, and magnetic properties of Mn ion were evaluated in the CaTiO 3 system through X-ray diffraction patterns (XRD), scanning electron microscopy + electron-dispersive spectroscopy (SEM + EDS), and vibrating sample magnetometry. Rietveld analysis of the XRDs at room temperature evidenced that the samples crystallized in the Pnma (62) space group. Likewise, the XRDs showed that lattice parameters decreased when increasing Mn content. The SEM + EDS results exhibited typical features of samples obtained by SSR at high temperatures. The zero-field cooling and field cooling curves of magnetization in temperatures ranging from 50 to 300 K showed paramagnetic behavior in the applied field for each Mn-doped sample with a possible weak ferromagnetic-like ordering. Conversely, the CaMnO 3 sample exhibited antiferromagnetic ordering with T N near 113.26 K.

show abstract

Section: Resultsmentioning

confidence: 99%

Mn Ion Influence on the Structural and Magnetic Response of CaTi1−xMnxO3

et al. 2021

View full text Add to dashboard Cite

show abstract

“…However, due to the large electronegativity of bismuth, its 6s orbital hybridizes with O-2p orbital. This hybridization through polar covalent bond would hamper the movement of e g electron from one Mn site to the other resulting in electron localization around Bi 3+ ion [22,23]. The formation of localizations state will reflect as distortions in bismuth-substituted samples.…”

Section: Magnetismmentioning

confidence: 99%

Thermomagnetic Correlation in La0.85-xBixNa0.15MnO3 Soft Ferromagnet due to Nonmagnetic Bi3+ Substitution

Mendonca

Murari

Daivajna

2021

J Supercond Nov Magn

Self Cite

View full text Add to dashboard Cite

We report the structural, magnetic, and magnetocaloric properties of Bismuth (Bi)-substituted manganite La0.85-xBixNa0.15MnO3 (x=0, 0.1, 0.2, 0.25, and 0.3). X-ray diffraction data implicates the rhombohedral structure with $$ R\overline{3}c $$ R 3 ¯ c space group. Bi2O3 has helped in ensuring phase pure, densified compounds even at low sintering temperature and hence avoiding the evaporation of volatile sodium. The increase in grain size and decrease in magnetic transition temperature (TC) are due to the Bi chemical activity and electronic structure. The samples have shown indirect magnetic transformation from soft ferromagnet to canted ferromagnet/antiferromagnet with Bi. Griffiths phase-like behavior in the inverse magnetic susceptibility was observed for x=0.1; with further increase in Bi, the samples are found to develop the antiferromagnetic competing phase. The phenomenological model was used to model the thermomagnetic behavior of all the samples. The sample with x=0.1 shows an increase in magnetic entropy change upon Bi substitution and the maximum of magnetic entropy change is seen at 275K emphasizing its potential in room temperature magnetic refrigeration.

show abstract

Study of magnetocaloric properties of small Bi-doped Pr0.55Ca0.05Ba0.40Mn1−xBixO3 manganites

Akça,

Kılıç Çetin,

Ekicibil

2024

J Mater Sci: Mater Electron

View full text Add to dashboard Cite

Here, we investigated the magnetic and magnetocaloric (MC) properties of manganites labeled PrCaBaMnO and PrCaBaMnBiO, with compositions Pr0.55Ca0.05Ba0.40Mn1−xBixO3 (x = 0 and 0.02), respectively. The solid-state reaction method was used for sample preparation, and the structural properties were checked using X-ray diffraction (XRD). Temperature dependence of magnetization (M(T)) measurements was carried out in the range of 5–300 K under 100 Oe field to determine the transition temperature of the manganites. Magnetic entropy change ($$-\Delta {S}_{\text{M}}$$ - Δ S M ) values were computed from field-dependent magnetization (M(H)) measurements. For the 2 T magnetic field values, the $$-\Delta {{S}_{ }}_{\text{M}}^{\text{max}}$$ - Δ S M max values for the PrCaBaMnO and PrCaBaMnBiO manganites are 3.15 and 2.86 Jkg-1K-1, respectively. Relative Cooling Power (RCP) values were calculated from the temperature dependence of $$-\Delta {S}_{\text{M}}$$ - Δ S M (T) curves, resulting in 82.4 and 88.6 Jkg-1 for PrCaBaMnO and PrCaBaMnBiO, respectively. Banerjee’s criterion and Franco’s universal master curve confirmed that the transition type for the studied manganites is second order.

show abstract

Magneto Transport Anomaly of Bismuth Substituted (La, Na) MnO3

Cited by 9 publications

References 20 publications

Mn Ion Influence on the Structural and Magnetic Response of CaTi1−xMnxO3

Mn Ion Influence on the Structural and Magnetic Response of CaTi1−xMnxO3

Thermomagnetic Correlation in La0.85-xBixNa0.15MnO3 Soft Ferromagnet due to Nonmagnetic Bi3+ Substitution

Study of magnetocaloric properties of small Bi-doped Pr0.55Ca0.05Ba0.40Mn1−xBixO3 manganites

Contact Info

Product

Resources

About