Evidence for Pr3+ in EuBa1.3Pr0.7Cu3O7−δ by 141Pr Mössbauer spectroscopy

Klencsár, Z.; Кузманн, Э.; Vértes, A.; Gubbens, P.C.M.; Kraan, A.M. van der; Bódogh, M.; Kotsis, I.

doi:10.1016/s0921-4534(99)00562-6

Cited by 12 publications

(3 citation statements)

References 23 publications

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“…This study on the light rare-earth substitution for Ba in Eu123 has shown that Pr behaves almost like other rare-earth elements when it is substituted for Ba in Eu123. The results of the polycrystalline compound Eu(Ba 1:3 R 0:7 )-Cu 3 O 7À 17) investigated by Pr Mossbauer spectroscopy explain why Pr behaves very similarly to other þ3 cations (La, Nd) when substituted for Ba in this system.…”

Section: Introductionmentioning

confidence: 77%

Effect of Pr Doping on Transport Properties of Nd(Ba_2-xPr_x)Cu₃O_7+δ

Maleki¹,

Akhavan²

2005

jjap

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Solid-state-reacted polycrystalline Nd(Ba2-xPrx)Cu3O7+δ materials have been prepared and investigated using X-ray diffraction and resistivity measurements. Our results show that Nd(Ba2-xPrx)Cu3O7+δ is a superconductor when x<0.3. The Tc depression in superconductivity of Pr at Ba sites is due to both hole filling/localization and depairing effects. The normal state conductivity undergoes a dimensional crossover from two-dimensional to three-dimensional in the frame of the variable range hopping regime. The localization length of carriers shows that Pr doping localizes carriers in the normal state and causes the Tc depression. The magnetoresistance of the samples has been investigated within the thermally activated flux creep (TAFC) and Ambegaokar and Halperin (AH) phase slip models. The pinning energy and critical current density decrease with the applied magnetic field and Pr doping. A scaling relation as a power-law dependence of pinning energy on the magnetic field has been obtained. The derived pinning energy shows that Pr doping plays the role of a weak link.

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Section: Introductionmentioning

confidence: 77%

Effect of Pr Doping on Transport Properties of Nd(Ba_2-xPr_x)Cu₃O_7+δ

Maleki¹,

Akhavan²

2005

jjap

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“…3 On the other hand a large number of results obtained with different techniques point to a 3 + valence state of Pr (see, e.g., Refs. [12][13][14]. Thus, Pr is the exceptional three-valent rareearth element which substantially influences the superconducting and magnetic properties of R 1−x Pr x Ba 2 Cu 3 O 7−δ .…”

Section: Introductionmentioning

confidence: 99%

Effect of pressure on the Cu and Pr magnetism in Nd1−xPrxBa2
Maisuradze
¹
,
Graneli²,
Guguchia³
et al. 2013
Phys. Rev. B
7
1
12
0
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The effect of pressure on the copper and praseodymium magnetic order in the system Nd 1−x Pr x Ba 2 Cu 3 O 7−δ with x = 0.3, 0.5, 0.7, and 1 was investigated by means of the muon spin rotation technique. It was found that the effect of pressure on the Néel temperatures of both copper and praseodymium is positive for the whole range of Pr concentrations (0.3 < x < 1) studied. These findings are in contrast with a number of previous reports and clarify some of the puzzles related to the effect of pressure on superconductivity and magnetism in the praseodymium-substituted R 1−x Pr x Ba 2 Cu 3 O 7−δ systems, where R is a rare-earth element.

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“…Many experiments have been carried out for Pr@Ba on samples of Pr123 [6, 9 -12], Y123 [13,14], Sm123 [12], Eu123 [15,16], Gd123 [17], and other rare earth elements R@Ba such as La and Eu@Ba in Pr123 [18], La@Ba in Y123 [14], or in Pr123 [4], Nd@Ba in Nd123 [13,19], Ho,Y and Ca@Pr in Pr123 [20], Ba@Pr in Pr123 [21,22]. Through these experiments different structural and valence modifications related to Pr are reported.…”

Section: Structural Propertiesmentioning

confidence: 99%

Ba@Pr or Pr@Ba in R123 HTSC – To be or not to be SC

Akhavan

2004

Physica Status Solidi (b)

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In spite of the vast amount of experimental and theoretical knowledge accumulated in HTSC, the nature of the interaction driving charge carriers to form Cooper pairs below T c is still unknown. To elucidate the controversial insulating/SC Pr123, the substitution of Pr at Ba site (Pr@Ba) with Ba at Pr site (Ba@Pr) in R123 is compared and reviewed. This might shed some light on the microscopic origin of HTSC.

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Evidence for Pr3+ in EuBa1.3Pr0.7Cu3O7−δ by 141Pr Mössbauer spectroscopy

Cited by 12 publications

References 23 publications

Effect of Pr Doping on Transport Properties of Nd(Ba_2-xPr_x)Cu₃O_7+δ

Effect of Pr Doping on Transport Properties of Nd(Ba_2-xPr_x)Cu₃O_7+δ

Effect of pressure on the Cu and Pr magnetism in Nd1−xPrxBa2
Maisuradze
¹
,
Graneli²,
Guguchia³
et al. 2013
Phys. Rev. B
7
1
12
0
View full text Add to dashboard Cite

Ba@Pr or Pr@Ba in R123 HTSC – To be or not to be SC

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Evidence for Pr3+ in EuBa1.3Pr0.7Cu3O7−δ by 141Pr Mössbauer spectroscopy

Cited by 12 publications

References 23 publications

Effect of Pr Doping on Transport Properties of Nd(Ba2-xPrx)Cu3O7+δ

Effect of Pr Doping on Transport Properties of Nd(Ba2-xPrx)Cu3O7+δ

Effect of pressure on the Cu and Pr magnetism in Nd1−xPrxBa2Maisuradze1, Graneli2, Guguchia3 et al. 2013Phys. Rev. B71120View full textAdd to dashboardCite

Ba@Pr or Pr@Ba in R123 HTSC – To be or not to be SC

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Effect of Pr Doping on Transport Properties of Nd(Ba_2-xPr_x)Cu₃O_7+δ

Effect of Pr Doping on Transport Properties of Nd(Ba_2-xPr_x)Cu₃O_7+δ

Effect of pressure on the Cu and Pr magnetism in Nd1−xPrxBa2
Maisuradze
¹
,
Graneli²,
Guguchia³
et al. 2013
Phys. Rev. B
7
1
12
0
View full text Add to dashboard Cite