Easy synthesis and electric, magneto-transport and magnetic properties of double perovskite La2CoMnO6 compound

Yadav, Ravindra Nath; Para, Touseef Ahmad; Reshi, Hilal Ahmad; Pillai, Sakuntala S.; Shelke, Vilas

doi:10.1007/s10854-016-5882-6

Cited by 18 publications

(5 citation statements)

References 24 publications

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“…Below 200 K temperature, ρ ( T ) is fitted with the variable range hopping (VRH) model. [ 12,39,49–52 ] The equation relating the VRH is given as

$$\rho = \left(\rho\right)_{0} \text{exp} \left[\right. \left(\left(\right.

…”

Section: Resultsmentioning

confidence: 99%

“…The DPs R 2 CoMnO 6 , usually adopt either an orthorhombic phase [37,38] (space symmetry Pnma) where Co/Mn ions are randomly situated over 6c-sites or a monoclinic phase [39,40] (space symmetry P21/n) where Co/Mn cations are occupied 2c and 2d Wyckoff positions in a perfect ordered manner. However, in the ordered state itself, there is the possibility that some of the Co and Mn cations may exchange their crystallographic sites depending upon variations in sintering temperature, heating/ cooling rate, valance states, etc.…”

Section: Resultsmentioning

confidence: 99%

“…Below 200 K temperature, ρ(T ) is fitted with the variable range hopping (VRH) model. [12,39,[49][50][51][52] The equation relating the VRH is given as…”

Section: Resultsmentioning

confidence: 99%

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Maxwell–Wagner Polarization and Mixed Ferromagnetic and Antiferromagnetic State in Eu₂CoMnO₆

Alam,

Kumar,

Kumar

et al. 2023

Physica Status Solidi (b)

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Herein, the electrical and magnetic properties of polycrystalline Eu2CoMnO6 are explored. More specifically, based on transport, dielectric, and impedance measurements, a thermally activated dielectric polarization near room temperature is reported. The valence states of transition metals in the Eu2CoMnO6 sample are studied by measuring the X‐ray absorption spectra at both Co‐L2,3 and Mn‐L2,3 edges. Moreover, based on magnetization, X‐ray absorption spectroscopy, and X‐ray magnetic circular dichroism measurements, the coexistence of competing ferromagnetic and antiferromagnetic phases is probed. Dielectric measurement shows a large dielectric constant near room temperature along with a large frequency dispersion. The temperature‐dependent resistivity, Cole–Cole plot, and imaginary part of impedance confirm the semiconducting nature of Eu2CoMnO6. Temperature‐dependent magnetization shows a second‐order magnetic transition below 125 K. Isothermal magnetization versus magnetic field loop shows first‐order metamagnetic transition, driven by mixed magnetic state owing to the presence of antisite disorder and antiphase boundary.

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“…Below 200 K temperature, ρ ( T ) is fitted with the variable range hopping (VRH) model. [ 12,39,49–52 ] The equation relating the VRH is given as

$$\rho = \left(\rho\right)_{0} \text{exp} \left[\right. \left(\left(\right.

…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Maxwell–Wagner Polarization and Mixed Ferromagnetic and Antiferromagnetic State in Eu₂CoMnO₆

Alam,

Kumar,

Kumar

et al. 2023

Physica Status Solidi (b)

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show abstract

“…The large value of resistivity might be attributed to the structural distortion which narrowed 3d-bands and put off the electron hopping [57]. Below 160 K, the resistivity is best described by the variable range hopping (VRH) model, given by equations [58][59][60].…”

Section: Transport Propertiesmentioning

confidence: 99%

Multifunctional behaviour in B-site disordered double perovskite EuPrCoMnO₆

Alam¹,

Ghosh²,

Majumder³

et al. 2022

J. Phys. D: Appl. Phys.

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We report magnetic, transport, dielectric, and complex impedance of polycrystalline double perovskite EuPrCoMnO6 which crystallizes in disordered orthorhombic phase with space group Pnma. The DC magnetization shows two successive ferromagnetic transitions around 146 K and 138 K. The temperature and magnetic field variation of DC-susceptibility suggest the existence of Griffith phase and spontaneous exchange bias. AC susceptibility measurement shows a glassy dynamic behaviour near ferromagnetic transition. Further, a re-entrant glassy dynamic state is seen at a low temperature around 40 K. Temperature-dependent resistivity shows semiconducting/insulating nature, which gets increased under the application of magnetic field, showing positive magnetoresistance. The dielectric study shows usual frequency-dependent step-like behaviour with a colossal dielectric constant near room temperature. The complex impedance study shows both grain and grain boundary contribute to the electrical properties. The observed properties suggest the material can be used for spintronic devices and high dielectric applications.

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“…The degree of the B-site ordering for perovskites depends on the synthesis method, temperature, and strain engineering, ranging from fully ordered (an ordered rock-salt type) to fully disordered type [ 24 , 25 ]. A surge in the cation ordering increases the magnetic ordering.…”

Section: Introductionmentioning

confidence: 99%

Multiferroic and Magnetodielectric Effects in Multiferroic Pr2FeAlO6 Double Perovskite

Liu

Xiang²,

Ye³

et al. 2022

Nanomaterials

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Single-phase multiferroics that allow the coexistence of ferroelectric and magnetic ordering above room temperature are highly desirable, and offer a fundamental platform for novel functionality. In this work, a double perovskite multiferroic Pr2FeAlO6 ceramic is prepared using a sol-gel process followed by a quenching treatment. The well-crystallized and purified Pr2FeAlO6 in trigonal structure with space group R3c is confirmed. A combination of the ferroelectric (2Pr = 0.84 μC/cm2, Ec = 7.78 kV/cm at an applied electric field of 20 kV/cm) and magnetic (2Mr = 433 memu/g, Hc = 3.3 kOe at an applied magnetic field of 1.0 T) hysteresis loops reveals the room-temperature multiferroic properties. Further, the magnetoelectric effect is observed from the measurements of magnetically induced dielectric response and polarization. The present results suggest a new complex oxide candidate for room-temperature multiferroic applications.

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Easy synthesis and electric, magneto-transport and magnetic properties of double perovskite La2CoMnO6 compound

Cited by 18 publications

References 24 publications

Maxwell–Wagner Polarization and Mixed Ferromagnetic and Antiferromagnetic State in Eu₂CoMnO₆

Maxwell–Wagner Polarization and Mixed Ferromagnetic and Antiferromagnetic State in Eu₂CoMnO₆

Multifunctional behaviour in B-site disordered double perovskite EuPrCoMnO₆

Multiferroic and Magnetodielectric Effects in Multiferroic Pr2FeAlO6 Double Perovskite

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Easy synthesis and electric, magneto-transport and magnetic properties of double perovskite La2CoMnO6 compound

Cited by 18 publications

References 24 publications

Maxwell–Wagner Polarization and Mixed Ferromagnetic and Antiferromagnetic State in Eu2CoMnO6

Maxwell–Wagner Polarization and Mixed Ferromagnetic and Antiferromagnetic State in Eu2CoMnO6

Multifunctional behaviour in B-site disordered double perovskite EuPrCoMnO6

Multiferroic and Magnetodielectric Effects in Multiferroic Pr2FeAlO6 Double Perovskite

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Product

Resources

About

Maxwell–Wagner Polarization and Mixed Ferromagnetic and Antiferromagnetic State in Eu₂CoMnO₆

Maxwell–Wagner Polarization and Mixed Ferromagnetic and Antiferromagnetic State in Eu₂CoMnO₆

Multifunctional behaviour in B-site disordered double perovskite EuPrCoMnO₆