Magnetic properties, specific heat studies and Mössbauer measurements of PrBa2NbCu2O8

I. Felner; U. Asaf; D. Hechel; U. Yaron; T. Kröner

doi:10.1016/0921-4534(93)90123-8

Magnetic properties, specific heat studies and Mössbauer measurements of PrBa₂NbCu₂O₈

I. Felner^*, U. Asaf, D. Hechel, U. Yaron, T. Kröner

^*Corresponding author for this work

Racah Institute of Physics

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

PrBa₂NbCu₂O₈ has been studied by DC susceptibility and specific heat measurements to determine the magnetic behavior of the Pr sublattice, and by a 1% ⁵⁷Fe-doped sample to determine the magnetic behavior of the Cu(2) sites. The Pr sublattice and the CuO₂ planes are both antiferromagnetically ordered at 11.6 and 360 K, respectively. The Pr contribution to the specific heat ΔC_p(T) was calculated by subtracting the data of LaBa₂NbCu₂O₈ as background. The entropy associated with the magnetic transition is 6.7 J/mol K, intermediate between the expected values for Pr⁴⁺ and Pr³⁺. At low temperatures the magnetic contribution has the form of ΔC_p(T)=MT^3.1 characteristic of 3D antiferromagnetic magnons. In contrast to PrBa₂Cu₃O_z, no linear term for the electronic specific heat is observed in PrBa₂NbCu₂O₈.

Original language	English
Pages (from-to)	169-174
Number of pages	6
Journal	Physica C: Superconductivity and its Applications
Volume	214
Issue number	1-2
DOIs	https://doi.org/10.1016/0921-4534(93)90123-8
State	Published - 1 Sep 1993

Access to Document

10.1016/0921-4534(93)90123-8

Cite this

@article{baa3403d0a3344e580d6fb6f610e6fda,

title = "Magnetic properties, specific heat studies and M{\"o}ssbauer measurements of PrBa2NbCu2O8 ",

abstract = "PrBa2NbCu2O8 has been studied by DC susceptibility and specific heat measurements to determine the magnetic behavior of the Pr sublattice, and by a 1% 57Fe-doped sample to determine the magnetic behavior of the Cu(2) sites. The Pr sublattice and the CuO2 planes are both antiferromagnetically ordered at 11.6 and 360 K, respectively. The Pr contribution to the specific heat ΔCp(T) was calculated by subtracting the data of LaBa2NbCu2O8 as background. The entropy associated with the magnetic transition is 6.7 J/mol K, intermediate between the expected values for Pr4+ and Pr3+. At low temperatures the magnetic contribution has the form of ΔCp(T)=MT3.1 characteristic of 3D antiferromagnetic magnons. In contrast to PrBa2Cu3Oz, no linear term for the electronic specific heat is observed in PrBa2NbCu2O8.",

author = "I. Felner and U. Asaf and D. Hechel and U. Yaron and T. Kr{\"o}ner",

year = "1993",

month = sep,

day = "1",

doi = "10.1016/0921-4534(93)90123-8",

language = "אנגלית",

volume = "214",

pages = "169--174",

journal = "Physica C: Superconductivity and its Applications",

issn = "0921-4534",

publisher = "Elsevier B.V.",

number = "1-2",

}

TY - JOUR

T1 - Magnetic properties, specific heat studies and Mössbauer measurements of PrBa2NbCu2O8

AU - Felner, I.

AU - Asaf, U.

AU - Hechel, D.

AU - Yaron, U.

AU - Kröner, T.

PY - 1993/9/1

Y1 - 1993/9/1

N2 - PrBa2NbCu2O8 has been studied by DC susceptibility and specific heat measurements to determine the magnetic behavior of the Pr sublattice, and by a 1% 57Fe-doped sample to determine the magnetic behavior of the Cu(2) sites. The Pr sublattice and the CuO2 planes are both antiferromagnetically ordered at 11.6 and 360 K, respectively. The Pr contribution to the specific heat ΔCp(T) was calculated by subtracting the data of LaBa2NbCu2O8 as background. The entropy associated with the magnetic transition is 6.7 J/mol K, intermediate between the expected values for Pr4+ and Pr3+. At low temperatures the magnetic contribution has the form of ΔCp(T)=MT3.1 characteristic of 3D antiferromagnetic magnons. In contrast to PrBa2Cu3Oz, no linear term for the electronic specific heat is observed in PrBa2NbCu2O8.

AB - PrBa2NbCu2O8 has been studied by DC susceptibility and specific heat measurements to determine the magnetic behavior of the Pr sublattice, and by a 1% 57Fe-doped sample to determine the magnetic behavior of the Cu(2) sites. The Pr sublattice and the CuO2 planes are both antiferromagnetically ordered at 11.6 and 360 K, respectively. The Pr contribution to the specific heat ΔCp(T) was calculated by subtracting the data of LaBa2NbCu2O8 as background. The entropy associated with the magnetic transition is 6.7 J/mol K, intermediate between the expected values for Pr4+ and Pr3+. At low temperatures the magnetic contribution has the form of ΔCp(T)=MT3.1 characteristic of 3D antiferromagnetic magnons. In contrast to PrBa2Cu3Oz, no linear term for the electronic specific heat is observed in PrBa2NbCu2O8.

UR - http://www.scopus.com/inward/record.url?scp=0027657116&partnerID=8YFLogxK

U2 - 10.1016/0921-4534(93)90123-8

DO - 10.1016/0921-4534(93)90123-8

M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???

AN - SCOPUS:0027657116

SN - 0921-4534

VL - 214

SP - 169

EP - 174

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

IS - 1-2

ER -

Magnetic properties, specific heat studies and Mössbauer measurements of PrBa₂NbCu₂O₈

Abstract

Access to Document

Other files and links

Fingerprint

Cite this