Research output: Contribution to journal › Article › peer-review
Effect of Blocking and Superconducting Layer Doping on the Superconductivity and Magnetic Properties of Polycrystalline Sr 2 CaCu 2 O 6. / Sklyarova, A.; Shinoda, S.; Nagumo, T.; Chizhik, V. I.; Matveev, V. V.; Lindén, J.; Pohjonen, R.; Suzuki, T.; Nakayama, T.; Suematsu, H.
In: Journal of Superconductivity and Novel Magnetism, Vol. 31, No. 9, 01.09.2018, p. 2711-2717.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Effect of Blocking and Superconducting Layer Doping on the Superconductivity and Magnetic Properties of Polycrystalline Sr 2 CaCu 2 O 6
AU - Sklyarova, A.
AU - Shinoda, S.
AU - Nagumo, T.
AU - Chizhik, V. I.
AU - Matveev, V. V.
AU - Lindén, J.
AU - Pohjonen, R.
AU - Suzuki, T.
AU - Nakayama, T.
AU - Suematsu, H.
PY - 2018/9/1
Y1 - 2018/9/1
N2 - The possible difference in the properties upon doping the Sr 2 CaCu 2 O 6 superconducting or blocking layers with Fe and Eu respectively was investigated in this work. The homogeneous Sr 2−y Eu y CaCu 2 O 6+δ and Sr 2 CaCu 2−x Fe x O 6+δ (y = 0, 0.1, 0.5, x = 0, 0.05) compounds were produced by a high-pressure synthesis route. Judging by the magnetic susceptibility measurements, all samples exhibit a superconductivity transition and the Eu/Fe concentration dependencies on the diamagnetic moment and average T c have been constructed using the experimental data. As a result, an unusual behavior of the T c value was observed for the samples with doped Eu: a fivefold reduction in the europium concentration in the sample does not give a noticeable effect on the transition temperature value while the diamagnetic signal becomes more stronger. Complex superconducting dome was found for Eu-doped material: 0.1 ≤ y ≤ 0.5 region T c vs. concentration data were approximated by inverted parabola-like curve with a maximum at y = 0.3. Difference in properties of the Eu and Fe-doped samples was also found in the behavior of the hysteresis loops showed the opposite orientations.
AB - The possible difference in the properties upon doping the Sr 2 CaCu 2 O 6 superconducting or blocking layers with Fe and Eu respectively was investigated in this work. The homogeneous Sr 2−y Eu y CaCu 2 O 6+δ and Sr 2 CaCu 2−x Fe x O 6+δ (y = 0, 0.1, 0.5, x = 0, 0.05) compounds were produced by a high-pressure synthesis route. Judging by the magnetic susceptibility measurements, all samples exhibit a superconductivity transition and the Eu/Fe concentration dependencies on the diamagnetic moment and average T c have been constructed using the experimental data. As a result, an unusual behavior of the T c value was observed for the samples with doped Eu: a fivefold reduction in the europium concentration in the sample does not give a noticeable effect on the transition temperature value while the diamagnetic signal becomes more stronger. Complex superconducting dome was found for Eu-doped material: 0.1 ≤ y ≤ 0.5 region T c vs. concentration data were approximated by inverted parabola-like curve with a maximum at y = 0.3. Difference in properties of the Eu and Fe-doped samples was also found in the behavior of the hysteresis loops showed the opposite orientations.
KW - Eu Mössbauer spectroscopy
KW - Cuprate superconductors
KW - Magnetic and superconductivity properties
UR - http://www.scopus.com/inward/record.url?scp=85051807355&partnerID=8YFLogxK
UR - http://www.mendeley.com/research/effect-blocking-superconducting-layer-doping-superconductivity-magnetic-properties-polycrystalline-s
U2 - 10.1007/s10948-017-4555-x
DO - 10.1007/s10948-017-4555-x
M3 - Article
AN - SCOPUS:85051807355
VL - 31
SP - 2711
EP - 2717
JO - Journal of Superconductivity and Novel Magnetism
JF - Journal of Superconductivity and Novel Magnetism
SN - 1557-1939
IS - 9
ER -
ID: 42934315