Iron substitution effects in YBa2Cu4O8 synthesized by the sol-gel technique

Q Karppinen; J Linden; J Valo; A Kareiva; V Kozlov; K Terryll; L Niinisto; M Leskela; K V Rao

doi:10.1088/0953-2048/8/2/002

Iron substitution effects in YBa₂Cu₄O₈ synthesized by the sol-gel technique

Q Karppinen^*, J Linden, J Valo, A Kareiva, V Kozlov, K Terryll, L Niinisto, M Leskela, K V Rao

^*Corresponding author for this work

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

10 Citations (Scopus)

Abstract

Bulk YBa₂(Cu_1-y⁵⁷Fe_y) ₄O₈ samples with y=0.00-0.05 were synthesized by an aqueous sol-gel method under 1 atm oxygen pressure. The samples were characterized by XRD for phase purity and lattice parameters, by thermal analysis for oxygen stability as well as by magnetic susceptibility and SQUID measurements for magnetic and superconducting properties. Iron was found to both destabilize the YBa₂Cu₄O₈ phase and have a strong effect on its properties even at very low concentrations. The site assignment proposed for the iron dopant is based on the results of ⁵⁷Fe Mossbauer spectroscopy studies. The results are compared with the observed iron doping effects in the YBa₂Cu₃O _7-delta phase.

Original language	English
Pages (from-to)	79-84
Number of pages	6
Journal	Superconductor Science and Technology
Volume	8
Issue number	2
DOIs	https://doi.org/10.1088/0953-2048/8/2/002
Publication status	Published - 1995
Externally published	Yes
MoE publication type	A1 Journal article-refereed

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title = "Iron substitution effects in YBa2Cu4O8 synthesized by the sol-gel technique",

abstract = "Bulk YBa2(Cu1-y57Fey) 4O8 samples with y=0.00-0.05 were synthesized by an aqueous sol-gel method under 1 atm oxygen pressure. The samples were characterized by XRD for phase purity and lattice parameters, by thermal analysis for oxygen stability as well as by magnetic susceptibility and SQUID measurements for magnetic and superconducting properties. Iron was found to both destabilize the YBa2Cu4O8 phase and have a strong effect on its properties even at very low concentrations. The site assignment proposed for the iron dopant is based on the results of 57Fe Mossbauer spectroscopy studies. The results are compared with the observed iron doping effects in the YBa2Cu3O 7-delta phase.",

author = "Q Karppinen and J Linden and J Valo and A Kareiva and V Kozlov and K Terryll and L Niinisto and M Leskela and Rao, {K V}",

year = "1995",

doi = "10.1088/0953-2048/8/2/002",

language = "English",

volume = "8",

pages = "79--84",

journal = "Superconductor Science and Technology",

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T1 - Iron substitution effects in YBa2Cu4O8 synthesized by the sol-gel technique

AU - Karppinen, Q

AU - Linden, J

AU - Valo, J

AU - Kareiva, A

AU - Kozlov, V

AU - Terryll, K

AU - Niinisto, L

AU - Leskela, M

AU - Rao, K V

PY - 1995

Y1 - 1995

N2 - Bulk YBa2(Cu1-y57Fey) 4O8 samples with y=0.00-0.05 were synthesized by an aqueous sol-gel method under 1 atm oxygen pressure. The samples were characterized by XRD for phase purity and lattice parameters, by thermal analysis for oxygen stability as well as by magnetic susceptibility and SQUID measurements for magnetic and superconducting properties. Iron was found to both destabilize the YBa2Cu4O8 phase and have a strong effect on its properties even at very low concentrations. The site assignment proposed for the iron dopant is based on the results of 57Fe Mossbauer spectroscopy studies. The results are compared with the observed iron doping effects in the YBa2Cu3O 7-delta phase.

AB - Bulk YBa2(Cu1-y57Fey) 4O8 samples with y=0.00-0.05 were synthesized by an aqueous sol-gel method under 1 atm oxygen pressure. The samples were characterized by XRD for phase purity and lattice parameters, by thermal analysis for oxygen stability as well as by magnetic susceptibility and SQUID measurements for magnetic and superconducting properties. Iron was found to both destabilize the YBa2Cu4O8 phase and have a strong effect on its properties even at very low concentrations. The site assignment proposed for the iron dopant is based on the results of 57Fe Mossbauer spectroscopy studies. The results are compared with the observed iron doping effects in the YBa2Cu3O 7-delta phase.

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U2 - 10.1088/0953-2048/8/2/002

DO - 10.1088/0953-2048/8/2/002

M3 - Article

AN - SCOPUS:0029251892

SN - 0953-2048

VL - 8

SP - 79

EP - 84

JO - Superconductor Science and Technology

JF - Superconductor Science and Technology

IS - 2

ER -

Iron substitution effects in YBa₂Cu₄O₈ synthesized by the sol-gel technique

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