Ce-Doping and Reduction Annealing Effects on Magnetic Properties of Pr2-xCexCuO4 Nanoparticles

Baqiya, Malik Anjelh; Putra, Putu Eka Dharma; Triono, Bambang; Irfanita, Resky; Suasmoro, S.; Darminto, D.; Noji, Takashi; Sato, Hidetaka; Kato, Masaru; Koike, Yasuhiro

doi:10.1007/s10948-018-4941-z

Cited by 11 publications

(39 citation statements)

References 44 publications

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“…The socalled apical oxygen is known to be responsible for presenting magnetic behavior, namely, weak ferromagnetic features at room temperature [1]. By means the tetravalent ion doping, a crystalline defect may appear at the apical site and/or at the in-plane oxygen site exhibiting a dominant paramagnetic behavior with a minor weak ferromagnetic feature [2].…”

Section: Introductionmentioning

confidence: 99%

“…Among hundreds of HTS nanomaterials, the Pr 2−x Ce x CuO 4 (PCCO) is one of the T'-type cuprates that has been extensively studied in the last two decades. The existence of the crystalline defect [2,5], defect recovery [6], and the local structure [7] on this T'-type structure has been well studied in gaining a fundamental understanding of the structural behavior at room temperature. The structural studies at the under doped regime [5] and upper doped regime [2,8] of the T'-type cuprates have been explored in detail on the Ce-doping dependence in related to the crystalline defects due to annealing effect.…”

Section: Introductionmentioning

confidence: 99%

“…The existence of the crystalline defect [2,5], defect recovery [6], and the local structure [7] on this T'-type structure has been well studied in gaining a fundamental understanding of the structural behavior at room temperature. The structural studies at the under doped regime [5] and upper doped regime [2,8] of the T'-type cuprates have been explored in detail on the Ce-doping dependence in related to the crystalline defects due to annealing effect. Unfortunately, the detailed study of specific moderate tetravalent ionic doping has not been studied well.…”

Section: Introductionmentioning

confidence: 99%

“…Currently, it is found that the defect recovery on the T'-type structure can be strongly reduce the vacancy at the surface of the nanoparticles [6] in contrast to the full annealing oxygen reduction at vacuum atmosphere [1,2]. This may be related to the number of vacancies recovered and/or created in the nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

“…The electron type doping with specific calcination process may lead to a fundamental issue at where the moderate crystalline defect is formed to achieve the room temperature magnetism as well mentioned in Ref. [2].…”

Section: Introductionmentioning

confidence: 99%

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A Structural Investigation of T’-Pr2-xCexCuO4 nanocrystals with x = 0.13

et al. 2021

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This report is briefly investigating the structural defect information of T'-Pr2−xCexCuO4 (T'-PCCO) nanocrystals with x = 0.13 at three different calcination temperatures. The as-synthesized powder of Pr2−xCexCuO4 (PCCO) nanocrystals with x = 0.13 were synthesized by using the chemically dissolved method within three different calcination temperatures, namely 900 o C, 950 o C, and 1000 o C for 15 h in air. Xray diffraction (XRD) technique is used to characterize the phase, structural, and crystalline defect information on the nanocrystal powder. It is found that all the indexed peaks are confirmed as PCCO phase with space group of I4/mmm and a minor impurity of Fm-3m space group. The lattice parameters are confirmed to be fluctuated signifying the stability of the Coulomb force at those temperatures. The post-Rietveld analysis using Bond Valance Sum (BVS) calculation shows the Ce-dependent of T'-PCCO nanocrystals while the Fourier difference suggests that the created crystalline defect as a part of the tetravalent doping effect which binds stronger apical oxygen. Moreover, at Pr-and Cu-site, the scattering distribution are fluctuating with the stable structure at 1000 o C. This initial structural information is worth complementing the fundamental feature for understanding the T'-type cuprates.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Structural Investigation of T’-Pr2-xCexCuO4 nanocrystals with x = 0.13

et al. 2021

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Dependence of critical temperature on doping and oxygen reduction in Nd2-xCexCuO4-δ${\rm Nd}_{2{\hbox{-}}x}{\rm Ce}_x{\rm CuO}_{4{\hbox{-}}\delta}$ superconductor

Yayeh,

Kahsay,

Negussie

et al. 2024

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In this work, we have investigated the possible dependence of critical temperature (Tc) on cerium doping and oxygen reduction in oxide superconductor 2‐xCexCu (LCCO, L = Nd, Eu Pr) by employing the Green's function (GF) technique. Besides, we have shown the interconnection between electron doping and subtle oxygen reduction variability in the system by using Tikhonov regularization method (TRM). Within the above methods, both parameters of superconducting critical temperature (Tc) and antiferromagnetic transition temperature (TN) are calculated quantitatively by considering the electron doping followed by annealing and magnetic ordering for NCCO system. It is demonstrated that when the magnetic ordering is applied, Tc is suppressed whereas TN is enhanced. On the other hand, for electron doping, the values of these parameters become vice‐versa. It is shown that, with further electron doping, the antiferromagnetic state leads to higher frustration. However, it subtly persists up to about, . The critical temperature of NCCO occurs in the range of between 0.05 and 0.27 with at The antiferromagnetic (AFM) phase and superconducting (SC) phase diagrams are established in compact form and the coexistence between the two states is demonstrated. The current finding is compatible with previous results.

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