Observation of magneto-electric coupling in Sm0.5Sr0.5CoO3 nanoparticles

Sathyamoorthy, B.; Raja, Arumugam; Chandrasekaran, G.

doi:10.1007/s10854-017-8473-2

Cited by 5 publications

(6 citation statements)

References 46 publications

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“…One of the standard experimental analysis for establishing the presence of FM nature is the Arrott plot, where the square of the magnetization ( M 2 ) in a field, H , is plotted as a function of H / M for fixed temperature T . [ 61 ] Arrott plots at 900 K, which is well above T C and below T G for both samples, are shown in Figure 9c,d, respectively. The linear fit of the curve at high field region has a negative y ‐intercept ( M 2 ‐axis intercept), which again suggests the absence of a spontaneous magnetization ( M S = 0) in the material.…”

Section: Resultsmentioning

confidence: 92%

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Observation of Cluster Glass and Griffiths‐like Phase in Fe₃O₄Nanostructures

Revathy

Varma

Surendran

2020

Physica Status Solidi (b)

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In the present investigation, the rare occurrence of Griffiths‐like phase (GP) in Fe3O4 (magnetite) nanostructures is observed for the first time. Initially, Fe3O4 monodispersed nanoparticles and an intercalated ensemble of nanoparticles and nanorods are successfully synthesized by a facile one‐step synthesis. The magnetization, as a function of the applied field, confirms the absence of superparamagnetism in both samples. The thermomagnetic data at cryogenic temperatures show glassy nature, and the alternating current (AC) susceptibility measurements confirm the existence of cluster glass. The low‐field direct current (DC) magnetization measurements of Fe3O4 nanostructures show an anomalous magnetic behavior, which indicates the presence of GP above its Curie temperature. This unusual behavior is attributed to the presence of short‐range magnetic correlations and ferromagnetic clusters present in the system due to the size reduction.

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Section: Resultsmentioning

confidence: 92%

“…[ 52 ] As λ GP signifies the deviation from the CW behavior, the high value of λ GP suggests an increase in the strength of GP. [ 61 ]…”

Section: Resultsmentioning

confidence: 99%

Observation of Cluster Glass and Griffiths‐like Phase in Fe₃O₄Nanostructures

Revathy

Varma

Surendran

2020

Physica Status Solidi (b)

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“…According to Figure 5B, ZFC and FC curves of SmCoO 3 NFs start to depart at 250 K. As a typical perovskite, this obvious bifurcation of ZFC and FC curves at low temperature is mainly ascribed to the short‐range ordered ferromagnetic cluster and spin glass behavior 24 . ZFC curve shows a peak at 23 K, indicating the magnetic phase transition from paramagnetism to ferromagnetism 44 . FC curve starts to rise since the temperature is lower than 250 K. ZFC curve starts to decrease at the temperature below 23 K. The inset is the temperature dependence of inverse magnetic susceptibility under the applied magnetic field of 100 Oe.…”

Section: Resultsmentioning

confidence: 95%

“…Thus, SmCoO 3 NFs possess the coexisting of paramagnetic and ferromagnetic behaviors. The paramagnetic phase is mainly ascribed to magnetic moment of Sm 3+ , and the ferromagnetic behavior is primarily induced by the exchange interaction of Co 3+ ‐O 2‐ ‐Co 4+ 25,44 …”

Section: Resultsmentioning

confidence: 99%

“…24 ZFC curve shows a peak at 23 K, indicating the magnetic phase transition from paramagnetism to ferromagnetism. 44 FC curve starts to rise since the temperature is lower than 250 K. ZFC curve starts to decrease at the temperature below 23 K. The inset is the temperature dependence of inverse magnetic susceptibility under the applied magnetic field of 100 Oe. The Néel temperature is found to be 23 K, indicating the phase transition from paramagnetism to ferromagnetism.…”

Section: 𝜂 =mentioning

confidence: 99%

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Electrochemical and magnetic properties of electrospun SmFeO₃ and SmCoO₃ nanofibers

Yue

Yang

et al. 2021

J Am Ceram Soc.

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Uniform perovskite type SmFeO3 and SmCoO3 nanofibers have been prepared by a simple electrospinning approach and calcination process. The obtained samples had orthorhombic structure and strong absorbance behaviors in UV‐vis regions. The diameters of SmFeO3 and SmCoO3 nanofibers were 220 and 300 nm, respectively. The electrochemical and magnetic properties of SmFeO3 and SmCoO3 were investigated. SmFeO3 and SmCoO3 electrodes exhibited typical pseudocapacitive behaviors owing to the redox reactions of Fe3+/Fe2+ and Co3+/Co2+. At 0.5 A g‐1, the specific capacitances of SmFeO3 and SmCoO3 nanofibers were 90.8 and 126.6 F g‐1, respectively. The high‐performance nanostructured SmFeO3 and SmCoO3 have significantly potential application in supercapacitors. SmFeO3 nanofibers exhibited weak ferromagnetic behavior. SmCoO3 nanofibers presented paramagnetism at high temperature and ferromagnetism at 5 K.

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