Griffiths phase, magnetic memory and ac susceptibility of an antiferromagnetic titanate-based perovskite Er0.9Sr0.1Ti0.975Cr0.025O3 system

Hamdi, R.; Smari, M.; Bajorek, A.; Bessaïs, L.; Dhahri, E.; Samara, Ayman; Mansour, Said; Haik, Yousef

doi:10.1088/1402-4896/ab79af

Cited by 9 publications

(5 citation statements)

References 49 publications

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“…However, in the GP, where λ is different from zero, the inverse of the magnetic susceptibility follows the eq. ( 5), hence confirming the deviation from the Curie-Weiss law [47]. The blue line in Fig.…”

Section: 𝐂 = (𝐍𝛍 𝐞𝐟𝐟supporting

confidence: 72%

On the magnetotransport properties and Griffith phase in (La,Gd)1.4 (Ca,Sr)1.6 Mn2 O7 the double layered manganites

Belguet

Mahamdioua

Meriche

et al. 2023

Preprint

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The bilayered manganite with formula \({ \text{L}\text{a}}_{1.2}{\text{G}\text{d}}_{0.2}{\text{C}\text{a}}_{1.2}{\text{S}\text{r}}_{0.4}{\text{M}\text{n}}_{2}{\text{O}}_{7}\)has been synthesized by the solid state reaction route with the aim of studying its structural, microstructural, magnetic, electrical and magnetotransport properties. The X-ray diffraction patterns have been analyzed by Rietveld refinement. It revealed that the sample crystallized in a tetragonal structure with the space group I4/mmm and that, as an impurity phase, there were traces of an orthorhombic structure corresponding to a simple perovskite with the space group Pnma. The morphology was examined by using scanning electron microscopy, which revealed that it was porous and granular. The presence and purity of all the constituent elements were confirmed by the Energy Dispersive X-ray spectroscopy investigation. Based on magnetization, the inverse of susceptibility, and hysteresis loop, the magnetic behavior of the compound is discussed in detail. The sample displays a phase transition from ferromagnetic (FM) to paramagnetic (PM) at \({\text{T}}_{\text{C}}\), which was determined to be 290.13 K. Between 305 and 360 K, a Griffith phase (GP) was discovered, indicating the existence ofFM clusters in the paramagnetic domains, and the Griffithtemperature was found to be\(\)339 K. The sample can be thought of as spin-glass-like manganite since a significant divergence wasobserved at low temperatures between the magnetization curves M (T) in the zero-field cooling (ZFC) and field cooling (FC) modes. The spin-glass transition temperature was found to be 261 K. The electrical resistivity under both 0 and 1 T magnetic field exhibits metal-to-insulator transition at \({\text{T}}_{\text{M}\text{I}}\) = 152.98 K. The magnetoresistance was observed to decrease with increasing temperature, peaking at 23% at 11 K under 1 T. Total resistivity in magnetic applied fields of 0T and 1T is composed of residual resistivity, weak localization, and electron-electron combinations below \({\text{T}}_{\text{M}\text{I}}\). Above\({\text{T}}_{\text{M}\text{I}}\) and\({{\theta }}_{\text{D}}/2\) (\({{\theta }}_{\text{D}}\)is Debye temperature), the Mott’s 3D variable range hopping mechanism (3D-VRH) governed the electrical conduction, whereas, the adiabatic small polaron hopping model governed it in the range\({{\theta }}_{\text{D}}/2>\text{T}>300\text{K}\). The density of states, mean hopping energy, and mean hopping distance have all been estimated and thoroughly discussed.

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Section: 𝐂 = (𝐍𝛍 𝐞𝐟𝐟supporting

confidence: 72%

On the magnetotransport properties and Griffith phase in (La,Gd)1.4 (Ca,Sr)1.6 Mn2 O7 the double layered manganites

Belguet

Mahamdioua

Meriche

et al. 2023

Preprint

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“…We present in figures 8(a)-(c) the inverse of molar magnetic susceptibilities of the LT samples (LT-1 h, LT-3 h, and LT-6 h). The extracted values are: We also determined the experimental and theoretical values of the effective magnetic moments for all the samples: Both μ eff-exp and μ eff-th depict far values for LT-1h and LT-3h informing that the PM phase is inhomogeneous [33,34]. It can be, also, due to the disorder given by mismatch factor [35].…”

Section: Magnetic Results and Analysismentioning

confidence: 99%

La_0.6X_0.1Te_0.3MnO₃ system with significant refrigerant capacity at low magnetic field and double magnetic entropy change peaks: effect of ball-milling time on physical and critical behaviors

et al. 2023

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We have investigated the ball-milling time effect on different physical properties of La0.6◻0.1Te0.3MnO3 system (LT) milled for 1 hour (LT-1h), 3 hours (LT-3h), and 6 hours (LT-6h). According to Williamson-Hall method, as the ball-milling duration is increased, the material's crystallite size decreases from approximately 145 to 99 nm for LT-1h and LT-6h, respectively. Electronic study was also investigated. The Zero-Field-Cooling and Field-Cooling (ZFC/FC) magnetization measurements illustrated that all the systems are presenting a ferromagnetic to paramagnetic phase transition around Curie temperature (TC). This transition is around 176, 182, and 183 K accompanied by a decrease in the magnitude in both ZFC and FC data. Thus, increasing the ball-milling time of the sample leads to the elevation of TC and does not enhance the magnitude of the magnetization the fact that it affects the magnetic interactions between atoms. By increasing the ball-milling duration, the proportion of homogeneity is increased, and the material becomes slightly more resilient, according to the Curie-Weiss law. Additionally, it is accompanied with an increase in coercivity and a decrease in the saturation magnetization and remanence. Based on the AC-susceptibility, raising the ball-milling time facilitates the appearance of a spin-glass (SG) state. The relative cooling power (RCP) value in the LT-1h sample at 2 T is 108 % (211.758 J/kg) compared to that of the Gd at 2 T. Consequently, the LT sample could be a permanent magnet in a magnetic refrigerator. Noting that raising the ball-milling time weakens the RCP. Both LT-1h and LT-3h systems are belonging to the tricritical mean field model. However, for LT-6h, the model changed and the best one became the 3D-Ising model. Hence, the ball-milling time influences also the universality class.

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“…A GP is related to the nucleation of small and weakly correlated clusters (short-range order) embedded in a paramagnetic (PM) matrix, resulting in a magnetic phase where the system neither behaves like a PM nor shows longrange ordering [7,[17][18][19]. The disordered double perovskites which possess a GP have several potential applications in spintronic devices [7,[20][21][22]. Utilizing magnetic materials with a Griffiths-like phase in spintronic or memory devices offers numerous advantages, including the capability to finely adjust magnetic characteristics, reduce energy usage, minimum hysteresis-related losses, etc [7,[18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

“…The disordered double perovskites which possess a GP have several potential applications in spintronic devices [7,[20][21][22]. Utilizing magnetic materials with a Griffiths-like phase in spintronic or memory devices offers numerous advantages, including the capability to finely adjust magnetic characteristics, reduce energy usage, minimum hysteresis-related losses, etc [7,[18][19][20][21][22]. These characteristics make them appealing choices for enhancing device efficiency and functionality.…”

Section: Introductionmentioning

confidence: 99%

B-site disorder driven Griffiths-like phase and electrochemical behavior in Y₂NiCrO₆ double perovskite

Islam,

Tarek,

Asif Adib

et al. 2024

J. Phys. D: Appl. Phys.

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In this investigation, nanoparticles of B-site disordered Y2NiCrO6 (YNCO) double perovskite were synthesized by the facile sol-gel method to evaluate their magnetic and electrochemical properties. Their crystallgraphic structure is monoclinic and the average size of the particles is 79±16 nm. XPS analysis indicated a mixed oxidation states of B-site transition metals Ni2+/Ni3+ and Cr2+/Cr3+. The mixed valence states of Ni and Cr, along with the mixed magnetic phases of YNCO, constitute a signature of the B-site disorder. This antisite disorder contributed to the observation of a Griffiths-like phase arising from ferromagnetic short-range interactions above the magnetic transition up to the Griffiths temperature, TG=137 K. The synthesized YNCO double perovskite demonstrated a promising behavior as an electrode material for electrochemical supercapacitors. In a three-electrode system, it displayed a specific capacitance of 270 F g-1 at a current density of 0.5 A g-1. In a symmetric two-electrode system, YNCO exhibited a specific capacitance of 180 F g-1 at 0.5 A g-1, alongside an energy density of 6.25 Wh kg-1 at 250 W kg-1 power density. In both cases, we employed a mild 0.5 M neutral aqueous Na2SO4 solution as the electrolyte, in contrast to the typically employed corrosive and concentrated alkaline aqueous solution. The fascinating magnetic and charge storage properties of the B-site disordered YNCO double perovskite indicate its potential for use in spintronic devices and as efficient electrodes in symmetric hybrid supercapacitors.

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Griffiths phase, magnetic memory and ac susceptibility of an antiferromagnetic titanate-based perovskite Er_0.9Sr_0.1Ti_0.975Cr_0.025O₃ system

Cited by 9 publications

References 49 publications

On the magnetotransport properties and Griffith phase in (La,Gd)1.4 (Ca,Sr)1.6 Mn2 O7 the double layered manganites

On the magnetotransport properties and Griffith phase in (La,Gd)1.4 (Ca,Sr)1.6 Mn2 O7 the double layered manganites

La_0.6X_0.1Te_0.3MnO₃ system with significant refrigerant capacity at low magnetic field and double magnetic entropy change peaks: effect of ball-milling time on physical and critical behaviors

B-site disorder driven Griffiths-like phase and electrochemical behavior in Y₂NiCrO₆ double perovskite

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Griffiths phase, magnetic memory and ac susceptibility of an antiferromagnetic titanate-based perovskite Er0.9Sr0.1Ti0.975Cr0.025O3 system

Cited by 9 publications

References 49 publications

On the magnetotransport properties and Griffith phase in (La,Gd)1.4 (Ca,Sr)1.6 Mn2 O7 the double layered manganites

On the magnetotransport properties and Griffith phase in (La,Gd)1.4 (Ca,Sr)1.6 Mn2 O7 the double layered manganites

La0.6X0.1Te0.3MnO3 system with significant refrigerant capacity at low magnetic field and double magnetic entropy change peaks: effect of ball-milling time on physical and critical behaviors

B-site disorder driven Griffiths-like phase and electrochemical behavior in Y2NiCrO6 double perovskite

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Griffiths phase, magnetic memory and ac susceptibility of an antiferromagnetic titanate-based perovskite Er_0.9Sr_0.1Ti_0.975Cr_0.025O₃ system

La_0.6X_0.1Te_0.3MnO₃ system with significant refrigerant capacity at low magnetic field and double magnetic entropy change peaks: effect of ball-milling time on physical and critical behaviors

B-site disorder driven Griffiths-like phase and electrochemical behavior in Y₂NiCrO₆ double perovskite