On the effect of heterovalent substitutions in ruthenocuprates

P. W. Klamut; B. Dabrowski; S. M. Mini; M. Maxwell; J. Mais; I. Felner; U. Asaf; F. Ritter; A. Shengelaya; R. Khasanov; I. M. Savic; H. Keller; A. Wisniewski; R. Puzniak; I. M. Fita; C. Sulkowski; M. Matusiak

doi:10.1016/S0921-4534(03)00637-3

On the effect of heterovalent substitutions in ruthenocuprates

P. W. Klamut^*
, B. Dabrowski
, S. M. Mini
, M. Maxwell
, J. Mais
, I. Felner
, U. Asaf
, F. Ritter
, A. Shengelaya
, R. Khasanov
, I. M. Savic
, H. Keller
, A. Wisniewski
, R. Puzniak
, I. M. Fita
, C. Sulkowski
, M. Matusiak

^*Corresponding author for this work

Racah Institute of Physics

Research output: Contribution to journal › Conference article › peer-review

25 Scopus citations

Abstract

We discuss the properties of superconducting derivatives of the RuSr₂GdCu₂O₈ (1212-type) ruthenocuprate, for which heterovalent doping has been achieved through partial substitution of Cu ions into the RuO₂ planes (Ru_1-xSr₂GdCu_2+xO_8-δ, 0 ≤ x ≤ 0.75, T_c^max = 72 K for x = 0.3-0.4) and Ce ions into the Gd sites (RuSr₂Gd_1-yCe_yCu₂O₈, 0 ≤ y ≤ 0.1). The measurements of XANES, thermopower, and magnetization under external pressure reveal an underdoped character of all compounds. Muon spin rotation experiments indicate the presence of magnetic order at low temperatures (T_m = 14-2 K for x = 0.1-0.4). Properties of these two series lead us to the qualitative phase diagram for differently doped 1212-type ruthenocuprates. The difference in temperature of magnetic ordering found for superconducting and non-superconducting RuSr₂GdCu₂O₈ is discussed in the context of the properties of substituted compounds. The high pressure oxygen conditions required for synthesis of Ru_1-xSr₂RECu_2+xO_8-δ, have been extended to synthesis of a Ru_1-xSr₂Eu_2-yCe_yCu_2+xO _10-δ series. The Cu → Ru doping achieved in these phases is found to decrease the temperature for magnetic ordering as well the volume fraction of the magnetic phase.

Original language	English
Pages (from-to)	33-39
Number of pages	7
Journal	Physica C: Superconductivity and its Applications
Volume	387
Issue number	1-2
DOIs	https://doi.org/10.1016/S0921-4534(03)00637-3
State	Published - 1 May 2003
Event	Proceedings of the Polish - US Workshop - Ladek Zdroj, Poland Duration: 14 Jul 2002 → 16 Jul 2002

Keywords

High-pressure O synthesis
Magnetic superconductors
Muon spin rotation spectroscopy
Ruthenocuprates

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10.1016/S0921-4534(03)00637-3

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Klamut, P. W., Dabrowski, B., Mini, S. M., Maxwell, M., Mais, J., Felner, I., Asaf, U., Ritter, F., Shengelaya, A., Khasanov, R., Savic, I. M., Keller, H., Wisniewski, A., Puzniak, R., Fita, I. M., Sulkowski, C., & Matusiak, M. (2003). On the effect of heterovalent substitutions in ruthenocuprates. Physica C: Superconductivity and its Applications, 387(1-2), 33-39. https://doi.org/10.1016/S0921-4534(03)00637-3

@article{667b8f4bfc8d4150a9e474788fc957da,

title = "On the effect of heterovalent substitutions in ruthenocuprates",

abstract = "We discuss the properties of superconducting derivatives of the RuSr2GdCu2O8 (1212-type) ruthenocuprate, for which heterovalent doping has been achieved through partial substitution of Cu ions into the RuO2 planes (Ru1-xSr2GdCu2+xO8-δ, 0 ≤ x ≤ 0.75, Tcmax = 72 K for x = 0.3-0.4) and Ce ions into the Gd sites (RuSr2Gd1-yCeyCu2O8, 0 ≤ y ≤ 0.1). The measurements of XANES, thermopower, and magnetization under external pressure reveal an underdoped character of all compounds. Muon spin rotation experiments indicate the presence of magnetic order at low temperatures (Tm = 14-2 K for x = 0.1-0.4). Properties of these two series lead us to the qualitative phase diagram for differently doped 1212-type ruthenocuprates. The difference in temperature of magnetic ordering found for superconducting and non-superconducting RuSr2GdCu2O8 is discussed in the context of the properties of substituted compounds. The high pressure oxygen conditions required for synthesis of Ru1-xSr2RECu2+xO8-δ, have been extended to synthesis of a Ru1-xSr2Eu2-yCeyCu2+xO 10-δ series. The Cu → Ru doping achieved in these phases is found to decrease the temperature for magnetic ordering as well the volume fraction of the magnetic phase.",

keywords = "High-pressure O synthesis, Magnetic superconductors, Muon spin rotation spectroscopy, Ruthenocuprates",

author = "Klamut, \{P. W.\} and B. Dabrowski and Mini, \{S. M.\} and M. Maxwell and J. Mais and I. Felner and U. Asaf and F. Ritter and A. Shengelaya and R. Khasanov and Savic, \{I. M.\} and H. Keller and A. Wisniewski and R. Puzniak and Fita, \{I. M.\} and C. Sulkowski and M. Matusiak",

year = "2003",

month = may,

day = "1",

doi = "10.1016/S0921-4534(03)00637-3",

language = "אנגלית",

volume = "387",

pages = "33--39",

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

issn = "0921-4534",

publisher = "Elsevier B.V.",

number = "1-2",

note = "Proceedings of the Polish - US Workshop ; Conference date: 14-07-2002 Through 16-07-2002",

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Klamut, PW, Dabrowski, B, Mini, SM, Maxwell, M, Mais, J, Felner, I, Asaf, U, Ritter, F, Shengelaya, A, Khasanov, R, Savic, IM, Keller, H, Wisniewski, A, Puzniak, R, Fita, IM, Sulkowski, C & Matusiak, M 2003, 'On the effect of heterovalent substitutions in ruthenocuprates', Physica C: Superconductivity and its Applications, vol. 387, no. 1-2, pp. 33-39. https://doi.org/10.1016/S0921-4534(03)00637-3

TY - JOUR

T1 - On the effect of heterovalent substitutions in ruthenocuprates

AU - Klamut, P. W.

AU - Dabrowski, B.

AU - Mini, S. M.

AU - Maxwell, M.

AU - Mais, J.

AU - Felner, I.

AU - Asaf, U.

AU - Ritter, F.

AU - Shengelaya, A.

AU - Khasanov, R.

AU - Savic, I. M.

AU - Keller, H.

AU - Wisniewski, A.

AU - Puzniak, R.

AU - Fita, I. M.

AU - Sulkowski, C.

AU - Matusiak, M.

PY - 2003/5/1

Y1 - 2003/5/1

N2 - We discuss the properties of superconducting derivatives of the RuSr2GdCu2O8 (1212-type) ruthenocuprate, for which heterovalent doping has been achieved through partial substitution of Cu ions into the RuO2 planes (Ru1-xSr2GdCu2+xO8-δ, 0 ≤ x ≤ 0.75, Tcmax = 72 K for x = 0.3-0.4) and Ce ions into the Gd sites (RuSr2Gd1-yCeyCu2O8, 0 ≤ y ≤ 0.1). The measurements of XANES, thermopower, and magnetization under external pressure reveal an underdoped character of all compounds. Muon spin rotation experiments indicate the presence of magnetic order at low temperatures (Tm = 14-2 K for x = 0.1-0.4). Properties of these two series lead us to the qualitative phase diagram for differently doped 1212-type ruthenocuprates. The difference in temperature of magnetic ordering found for superconducting and non-superconducting RuSr2GdCu2O8 is discussed in the context of the properties of substituted compounds. The high pressure oxygen conditions required for synthesis of Ru1-xSr2RECu2+xO8-δ, have been extended to synthesis of a Ru1-xSr2Eu2-yCeyCu2+xO 10-δ series. The Cu → Ru doping achieved in these phases is found to decrease the temperature for magnetic ordering as well the volume fraction of the magnetic phase.

AB - We discuss the properties of superconducting derivatives of the RuSr2GdCu2O8 (1212-type) ruthenocuprate, for which heterovalent doping has been achieved through partial substitution of Cu ions into the RuO2 planes (Ru1-xSr2GdCu2+xO8-δ, 0 ≤ x ≤ 0.75, Tcmax = 72 K for x = 0.3-0.4) and Ce ions into the Gd sites (RuSr2Gd1-yCeyCu2O8, 0 ≤ y ≤ 0.1). The measurements of XANES, thermopower, and magnetization under external pressure reveal an underdoped character of all compounds. Muon spin rotation experiments indicate the presence of magnetic order at low temperatures (Tm = 14-2 K for x = 0.1-0.4). Properties of these two series lead us to the qualitative phase diagram for differently doped 1212-type ruthenocuprates. The difference in temperature of magnetic ordering found for superconducting and non-superconducting RuSr2GdCu2O8 is discussed in the context of the properties of substituted compounds. The high pressure oxygen conditions required for synthesis of Ru1-xSr2RECu2+xO8-δ, have been extended to synthesis of a Ru1-xSr2Eu2-yCeyCu2+xO 10-δ series. The Cu → Ru doping achieved in these phases is found to decrease the temperature for magnetic ordering as well the volume fraction of the magnetic phase.

KW - High-pressure O synthesis

KW - Magnetic superconductors

KW - Muon spin rotation spectroscopy

KW - Ruthenocuprates

UR - https://www.scopus.com/pages/publications/0037400972

U2 - 10.1016/S0921-4534(03)00637-3

DO - 10.1016/S0921-4534(03)00637-3

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AN - SCOPUS:0037400972

SN - 0921-4534

VL - 387

SP - 33

EP - 39

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

IS - 1-2

T2 - Proceedings of the Polish - US Workshop

Y2 - 14 July 2002 through 16 July 2002

ER -

On the effect of heterovalent substitutions in ruthenocuprates

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Keywords

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