Synthesis and study of Hg-based 1222-type superconducting cuprates (Hg, M)Sr2(Ln, Ce)2Cu2O(z)

E. Kandyel; A. Yamamoto; J. G. Wen; S. Tajima

doi:10.1006/jssc.2000.8869

Synthesis and study of Hg-based 1222-type superconducting cuprates (Hg, M)Sr₂(Ln, Ce)₂Cu₂O(z)

E. Kandyel, A. Yamamoto, J. G. Wen, S. Tajima

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

2 Citations (Scopus)

Abstract

A novel series of '1222-type' copper oxides described by the formula (Hg, M)Sr₂(Ln, Ce)₂Cu₂O₂ (M = Ti, V, Cr, Mo, W, Re; and Ln = Sm, Eu, Gd, Dy, Ho, Er) have been synthesized under high pressure. The structure was determined by combination of X-ray powder diffraction, electron diffraction and high-resolution electron microscopy measurements. The materials are isostrucrural with (Pb, Cu)-1222, crystallizing in a tetragonal unit cell, space group I4/mmm. The compounds adopt the 1222-type structure with an intergrowth of three types of layers: oxygen-deficient perovskite (CuO₅ pyramidal layers), double fluorite-type layers, and double rock-salt layers. A correlation between lattice parameters and effective ionic radii of the (Ln, Ce) site is determined for (Hg_0.75W_0.25)Sr₂(Ln_1.5Ce_0.5)Cu₂O(z), Ln = Sm-Er. Except for Cr-containing compound, bulk superconductivity is observed in all the synthesized compounds. The value of T(c) is related to both the effective ionic radius of the (Ln, Ce) site and the valence of the M-element. Among these compounds, the sample with nominal composition of (Hg_0.75W_0.25)Sr₂(Gd_1.5Ce_0.5)Cu₂O(z) recorded the highest T(c) up to 75 K. (C) 2000 Academic Press.

Original language	English
Pages (from-to)	488-497
Number of pages	10
Journal	Journal of Solid State Chemistry
Volume	154
Issue number	2
DOIs	https://doi.org/10.1006/jssc.2000.8869
Publication status	Published - 2000 Jan 1
Externally published	Yes

Keywords

(Hg, M)-1222
High-T(c) superconductors
High-pressure synthesis
Magnetic susceptibility
X-ray powder diffraction

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

Access to Document

10.1006/jssc.2000.8869

Fingerprint Dive into the research topics of 'Synthesis and study of Hg-based 1222-type superconducting cuprates (Hg, M)Sr2(Ln, Ce)2Cu2O(z)'. Together they form a unique fingerprint.

Cite this

@article{b2d8b578f50b443ab2b1782cbe7ca749,

title = "Synthesis and study of Hg-based 1222-type superconducting cuprates (Hg, M)Sr2(Ln, Ce)2Cu2O(z)",

abstract = "A novel series of '1222-type' copper oxides described by the formula (Hg, M)Sr2(Ln, Ce)2Cu2O2 (M = Ti, V, Cr, Mo, W, Re; and Ln = Sm, Eu, Gd, Dy, Ho, Er) have been synthesized under high pressure. The structure was determined by combination of X-ray powder diffraction, electron diffraction and high-resolution electron microscopy measurements. The materials are isostrucrural with (Pb, Cu)-1222, crystallizing in a tetragonal unit cell, space group I4/mmm. The compounds adopt the 1222-type structure with an intergrowth of three types of layers: oxygen-deficient perovskite (CuO5 pyramidal layers), double fluorite-type layers, and double rock-salt layers. A correlation between lattice parameters and effective ionic radii of the (Ln, Ce) site is determined for (Hg0.75W0.25)Sr2(Ln1.5Ce0.5)Cu2O(z), Ln = Sm-Er. Except for Cr-containing compound, bulk superconductivity is observed in all the synthesized compounds. The value of T(c) is related to both the effective ionic radius of the (Ln, Ce) site and the valence of the M-element. Among these compounds, the sample with nominal composition of (Hg0.75W0.25)Sr2(Gd1.5Ce0.5)Cu2O(z) recorded the highest T(c) up to 75 K. (C) 2000 Academic Press.",

keywords = "(Hg, M)-1222, High-T(c) superconductors, High-pressure synthesis, Magnetic susceptibility, X-ray powder diffraction",

author = "E. Kandyel and A. Yamamoto and Wen, {J. G.} and S. Tajima",

year = "2000",

month = jan,

day = "1",

doi = "10.1006/jssc.2000.8869",

language = "English",

volume = "154",

pages = "488--497",

journal = "Journal of Solid State Chemistry",

issn = "0022-4596",

publisher = "Academic Press Inc.",

number = "2",

}

TY - JOUR

T1 - Synthesis and study of Hg-based 1222-type superconducting cuprates (Hg, M)Sr2(Ln, Ce)2Cu2O(z)

AU - Kandyel, E.

AU - Yamamoto, A.

AU - Wen, J. G.

AU - Tajima, S.

PY - 2000/1/1

Y1 - 2000/1/1

N2 - A novel series of '1222-type' copper oxides described by the formula (Hg, M)Sr2(Ln, Ce)2Cu2O2 (M = Ti, V, Cr, Mo, W, Re; and Ln = Sm, Eu, Gd, Dy, Ho, Er) have been synthesized under high pressure. The structure was determined by combination of X-ray powder diffraction, electron diffraction and high-resolution electron microscopy measurements. The materials are isostrucrural with (Pb, Cu)-1222, crystallizing in a tetragonal unit cell, space group I4/mmm. The compounds adopt the 1222-type structure with an intergrowth of three types of layers: oxygen-deficient perovskite (CuO5 pyramidal layers), double fluorite-type layers, and double rock-salt layers. A correlation between lattice parameters and effective ionic radii of the (Ln, Ce) site is determined for (Hg0.75W0.25)Sr2(Ln1.5Ce0.5)Cu2O(z), Ln = Sm-Er. Except for Cr-containing compound, bulk superconductivity is observed in all the synthesized compounds. The value of T(c) is related to both the effective ionic radius of the (Ln, Ce) site and the valence of the M-element. Among these compounds, the sample with nominal composition of (Hg0.75W0.25)Sr2(Gd1.5Ce0.5)Cu2O(z) recorded the highest T(c) up to 75 K. (C) 2000 Academic Press.

AB - A novel series of '1222-type' copper oxides described by the formula (Hg, M)Sr2(Ln, Ce)2Cu2O2 (M = Ti, V, Cr, Mo, W, Re; and Ln = Sm, Eu, Gd, Dy, Ho, Er) have been synthesized under high pressure. The structure was determined by combination of X-ray powder diffraction, electron diffraction and high-resolution electron microscopy measurements. The materials are isostrucrural with (Pb, Cu)-1222, crystallizing in a tetragonal unit cell, space group I4/mmm. The compounds adopt the 1222-type structure with an intergrowth of three types of layers: oxygen-deficient perovskite (CuO5 pyramidal layers), double fluorite-type layers, and double rock-salt layers. A correlation between lattice parameters and effective ionic radii of the (Ln, Ce) site is determined for (Hg0.75W0.25)Sr2(Ln1.5Ce0.5)Cu2O(z), Ln = Sm-Er. Except for Cr-containing compound, bulk superconductivity is observed in all the synthesized compounds. The value of T(c) is related to both the effective ionic radius of the (Ln, Ce) site and the valence of the M-element. Among these compounds, the sample with nominal composition of (Hg0.75W0.25)Sr2(Gd1.5Ce0.5)Cu2O(z) recorded the highest T(c) up to 75 K. (C) 2000 Academic Press.

KW - (Hg, M)-1222

KW - High-T(c) superconductors

KW - High-pressure synthesis

KW - Magnetic susceptibility

KW - X-ray powder diffraction

UR - http://www.scopus.com/inward/record.url?scp=0033635509&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0033635509&partnerID=8YFLogxK

U2 - 10.1006/jssc.2000.8869

DO - 10.1006/jssc.2000.8869

M3 - Article

AN - SCOPUS:0033635509

VL - 154

SP - 488

EP - 497

JO - Journal of Solid State Chemistry

JF - Journal of Solid State Chemistry

SN - 0022-4596

IS - 2

ER -