Mixed oxides of the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si0062.svg"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="italic">Pr</mml:mi></mml:mrow><mml:mrow><mml:mn mathvariant="italic">1</mml:mn><mml:mo>−</mml:mo><mml:mi mathvariant="italic">x</mml:mi></mml:mrow></mml:msub><mml:msub><mml:mrow><mml:mi mathvariant="italic">Sr</mml:mi></mml:mrow><mml:mrow><mml:mi mathvariant="bold-italic">x</mml:mi></mml:mrow></mml:msub><mml:mi mathvariant="italic">Mn</mml:mi><mml:msub><mml:mro

Aguilar-Paz, Carol Julieth; Diosa, J.E.; Mosquera, Edgar; Alcázar, G. A. Pérez; Páez, Jorge Enrique Rodríguez; Bolaños, G.

doi:10.1016/j.jallcom.2021.163291

Cited by 6 publications

(2 citation statements)

References 87 publications

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“…Within this context, Pr 1−x Sr x MnO 3 (PSMO) has gained significant attention as a key member of the R 1−x A x MnO 3 family due to its unique properties, including an irreversible metamagnetic transition and potential applications in oxide thermoelectric modules [9]. Several studies have previously documented the investigation of the tunable magnetic, electronic, structural, and thermoelectric properties of this system for various Sr 2+ doping concentrations (x) [10][11][12][13][14][15][16][17][18]. Structural analysis has revealed an intriguing transition in PSMO from orthorhombic Ibmm symmetry to tetragonal I4/mcm symmetry and eventually to cubic Pm3m perovskite structure with increasing x [19].…”

Section: Introductionmentioning

confidence: 99%

Charge-ordering breakdown dynamics and ferromagnetic resonance studies of B-site Cu diluted Pr_1‒xSr _x MnO₃

Bordoloi,

Jena,

Tiwari

et al. 2024

J. Phys.: Condens. Matter

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Here, we report the influence of Jahn-Teller active Cu substitution on the charge-ordering characteristics of one of the well-known manganite Pr0.45Sr0.55MnO3 (S55) which exhibits distorted tetragonal structure (I4/mcm symmetry).Magnetization studies reveal that S55 exhibitsferromagnetic (FM) ordering with Curie temperature, TC ~220.5 K, antiferromagnetic (AFM) ordering below the Néel temperature TN ~ 207.6 K, and charge-ordering (CO) transition TCO~ 210 K which are in-line with the specific heat CP(T) data. Below TN, the CO (Mn3+ ↔ Mn4+) induces long-range AFM order, whereas above TN the FM-ordering driven by the double exchange (DE) interaction leads to a mixed-phase of competing CO-AFM and DE interaction in the region TN < T < TCO, and dominates completely over CO for T > TCO. However, the robust charge-ordering state breakdown altogether with a dilute substitution of Cu at the Mn B-sites resulting in enhanced ferrimagnetic order with TFN ~ 273 K, yet showing large magnetocrystalline anisotropy as confirmed by the ferromagnetic resonance (FMR)studies. Our results reveal that S55 possesses the cationic distribution: (Pr3+Sr2+)A [Mn3+Mn4+]BO3 different from the Cu substituted system: (Pr3+Sr2+)A [Cu2+Mn3+Mn4+]BO3 which is responsible for its diverse magnetic structure metamagnetic transition (HT-Max ~ 8.85 kOe at 180 K) associated with the CO phenomena in S55, first-order nature of the TCO, and the heat capacity (CM = A (T − TN)−α) critical exponent α = 0.097 (0.154) in the region T > TN (T < TN) are consistent with the magnetic structure. The temperature dependence of FMR resonance field ΔHRes(T), peak-to-peak width HPP(T) and Gilbert damping factor αG(T) shows clear anomalies across the TCO and in the morphotropic region (AFM/CO/FM) signifying the important role of admixtured (3+/4+) Mn state. A strong correlation between the FMR αG(T) and switchable magnetic entropy change (∆SMax ~ ‒ 8/+3 J kg−1K−1 for ∆H = 90 kOe) has been established.

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Section: Introductionmentioning

confidence: 99%

Charge-ordering breakdown dynamics and ferromagnetic resonance studies of B-site Cu diluted Pr_1‒xSr _x MnO₃

Bordoloi,

Jena,

Tiwari

et al. 2024

J. Phys.: Condens. Matter

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“…According to recent studies, the grain size or crystalline size is a very important factor, which strongly influences the physical properties of materials. The influence of size effect on the structure, electrical and magnetic properties of manganites synthesised by different methods has been extensively studied [13][14][15][16][17][18], but there are still controversial issues related to the nature of magnetic interactions and the critical behaviour in manganites (namely PSMO [19,20]) that need to be resolved. In this work, we give some results and discussions on the structure and the critical behaviour of a Pr 0.5 Sr 0.5 MnO 3 nanoparticle (PSMO-NP) sample with an average crystalline size of <D> = 58 ± 2 nm fabricated by a combination of reactive milling and heat treatment methods, a simple method can be applied to fabricate nanoparticle manganites.…”

Section: Introductionmentioning

confidence: 99%

Structural and critical properties of Pr_0.5Sr_0.5MnO₃ nanoparticle

Chinh¹,

Linh²,

Dung³

et al. 2023

Adv. Nat. Sci: Nanosci. Nanotechnol.

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In this work, a sample of Pr0.5Sr0.5MnO3 nanoparticles with an average crystalline size of <D> = 58 ± 2 nm was prepared by a combination of reactive milling method for 6 h at room temperature and heat treatment at the 1100 °C for 0.5 h. The x-ray diffraction analysis revealed the existence of a Pr0.5Sr0.5MnO3 single phase with the tetragonal structure (I4/mcm space group). Temperature and magnetic field dependences of magnetisation measurements indicated a coexistence of two magnetic phase transitions. One is the antiferromagnetic-ferromagnetic transition at T N = 150 K. The other is the second-order ferromagnetic-paramagnetic phase transition at T C = 273.5 K. Using the modified Arrott plots and the Kouvel-Fisher methods, the critical isotherm analysis, and the scaling relation, the magnetic order in Pr0.5Sr0.5MnO3 nanoparticle sample has been pointed out. Accordingly, the critical exponents were found to be β = 0.486, γ = 1.181, and δ = 3.249. These values are quite close to the allowable exponents of the mean field model, suggesting an existence of the long-range ferromagnetic order. A slight deviation from the mean field model has been explained by the formation of the core/shell structure in Pr0.5Sr0.5MnO3 nanoparticle.

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Admittance spectroscopy investigation of Pr0.65Ca0.25Sr0.1MnO3 system

Hanen,

Khlifi,

Mleiki

et al. 2023

J Mater Sci: Mater Electron

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Mixed oxides of the Pr1−xSrxMn

Cited by 6 publications

References 87 publications

Charge-ordering breakdown dynamics and ferromagnetic resonance studies of B-site Cu diluted Pr_1‒xSr _x MnO₃

Charge-ordering breakdown dynamics and ferromagnetic resonance studies of B-site Cu diluted Pr_1‒xSr _x MnO₃

Structural and critical properties of Pr_0.5Sr_0.5MnO₃ nanoparticle

Admittance spectroscopy investigation of Pr0.65Ca0.25Sr0.1MnO3 system

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Mixed oxides of the Pr1−xSrxMn

Cited by 6 publications

References 87 publications

Charge-ordering breakdown dynamics and ferromagnetic resonance studies of B-site Cu diluted Pr1‒x Sr x MnO3

Charge-ordering breakdown dynamics and ferromagnetic resonance studies of B-site Cu diluted Pr1‒x Sr x MnO3

Structural and critical properties of Pr0.5Sr0.5MnO3 nanoparticle

Admittance spectroscopy investigation of Pr0.65Ca0.25Sr0.1MnO3 system

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Product

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Charge-ordering breakdown dynamics and ferromagnetic resonance studies of B-site Cu diluted Pr_1‒xSr _x MnO₃

Charge-ordering breakdown dynamics and ferromagnetic resonance studies of B-site Cu diluted Pr_1‒xSr _x MnO₃

Structural and critical properties of Pr_0.5Sr_0.5MnO₃ nanoparticle