Influence of Sm-doping on the structural, magnetic, and electrical properties of La0.8−Sm Sr0.2MnO3 (0 &lt;x&lt; 0.45) manganites

Ehsani, M.H.; Kameli, P.; Razavi, F. S.; Ghazi, M. E.; Aslibeiki, B.

doi:10.1016/j.jallcom.2013.06.067

Cited by 67 publications

(13 citation statements)

References 65 publications

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“…Rare-earth manganites with perovskite structure of the general composition of type Re1-xAxMnO3 where Re is a trivalent rare-earth ion such as La, Nd, Dy, Pr and A is a divalent alkaline-earth such as Ca, Sr or Ba has been received remarkable attention due to their unique physical properties as well as potential applications [1][2][3][4][5][6]. In addition, studies on these rare-earth manganites have revealed that colossal magnetoresistance (CMR) effect which is commonly attributed to the double-exchange (DE) mechanism is also suggested to be related to the Jahn-Teller (JT) effect and charge ordering (CO) [7].…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Double-Exchange Mechanism in Charge-Ordered Pr0.75Na0.25MnO3 Ceramics by Cr Doped at Mn-Site

Zawawi¹,

Ibrahim²,

Shamsuddin³

2018

IJCRSET

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Charge ordered Pr0.75Na0.25Mn1-xCrxO3 (x = 0-0.04) ceramics has been investigated to study the effect of Cr doping on structure and electrical transport properties as well as surface morphology which synthesized using the solid-state reaction method. X-ray diffraction (XRD) analysis revealed the crystalline phase of all samples consists of essentially single phase and crystallized in an orthorhombic structure. The Cr doping were influence the lattice parameters and the unit cell volume suggestively due to the different of ionic radius between Mn 3+ ions and Cr 3+ ions. DC electrical resistance measurement showed that, the x = 0 sample exhibited an insulating behaviour down to the lower temperature. Interestingly, the metal-insulator (MI) transition temperature for x = 0.02 and x = 0.04 samples were found to be around TMI~120 K and TMI~122 K respectively indicating the enhancement of double-exchange (DE) mechanism as a result of weakening the Jahn-Teller (JT) effect which caused the charge ordered (CO) state to be weakened. scanning electron microscope (SEM) images of Pr0.75Na0.25Mn1-xCrxO3 compound showed the morphology of the samples were quite uniform suggestively due to the good crystalline nature.

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Section: Introductionmentioning

confidence: 99%

Enhancement of Double-Exchange Mechanism in Charge-Ordered Pr0.75Na0.25MnO3 Ceramics by Cr Doped at Mn-Site

Zawawi¹,

Ibrahim²,

Shamsuddin³

2018

IJCRSET

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“…Moreover, their extraordinary chemical stability and tunable phase transitions are also added advantages to choose manganites for technological applications [7][8]. A prominent feature of these materials is colossal magnetoresistance (CMR) effect, which has been extensively studied in last few decades [9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Structural distortion effect on the magnetization and magnetocaloric effect in Pr modified La0.65Sr0.35MnO3 manganite

Anwar

Ahmed

Koo

2014

Journal of Alloys and Compounds

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“…All the loops possess small remanence and coercivity (inset of figure 4a). The negligible small magnetic hysteresis loss is the sign of the soft ferromagnetic nature of the system, which is also a requirement for magnetic refrigeration application [20]. Table 2.…”

Section: Magnetic and The Magnetocaloric Studiesmentioning

confidence: 99%

The magnetic, magnetic entropy and critical behavior studies in La0.8Ba0.2MnO3 around magnetic phase transition temperature.

Iqbal¹,

Khan²,

Khan³

et al. 2020

Preprint

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Magnetocaloric and critical phenomenon investigations were carried out in the crystalline La0.8Ba0.2MnO3 samples prepared through solid state reaction technique. X-ray diffraction (XRD) pattern and its Rietveld refinement using Rietica software confirmed the crystalline phase purity of rhombohedral structure with space group . From magnetic measurements, the Ferromagnetic to paramagnetic (FM-PM) phase transition was observed at TC ~ 285K. The maximum change in magnetic entropy ( ) and relative cooling power (RCP) extracted from magnetic measurements were 3.02 J/kg K and 142.00 J/kg at an applied magnetic field (moH) of 4T. Griffiths phase (GP) with a susceptibility exponent λ = 0.44 was also detected in temperature range of TC < T < TG. Critical exponential analysis indicated the 3D-Ising model like magnetic phase transition at TC. Critical exponent’s reliability was confirmed using models such as universal scaling equations of state and Widom scaling relation. Magnetic entropy change follows the law ΔSM = (moH)n for n = 0.46.

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Influence of Sm-doping on the structural, magnetic, and electrical properties of La0.8−Sm Sr0.2MnO3 (0 <x< 0.45) manganites

Cited by 67 publications

References 65 publications

Enhancement of Double-Exchange Mechanism in Charge-Ordered Pr0.75Na0.25MnO3 Ceramics by Cr Doped at Mn-Site

Enhancement of Double-Exchange Mechanism in Charge-Ordered Pr0.75Na0.25MnO3 Ceramics by Cr Doped at Mn-Site

Structural distortion effect on the magnetization and magnetocaloric effect in Pr modified La0.65Sr0.35MnO3 manganite

The magnetic, magnetic entropy and critical behavior studies in La0.8Ba0.2MnO3 around magnetic phase transition temperature.

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