@article{oai:kutarr.kochi-tech.ac.jp:00000108,
 author = {Maeda, Toshihiko and Tashiro, Tairiku and Horii, Shigeru},
 journal = {Physica C: Superconductivity},
 month = {Dec},
 note = {Samples with nominal compositions of x = 0–0.1 in (Bi(1+3x)/3Cu(2−3x)/3)Sr2(RE1−xCax)Cu2Oz ((Bi,Cu)-“1-2-1-2”; RE: Y or rare-earth element) were synthesized by a solid-state reaction method and characterized by means of X-ray diffractometry (XRD). It is confirmed that the (Bi,Cu)-“1-2-1-2” forms only when RE = Y, Dy and Ho. Single- or nearly single-phase samples are obtained for x = 0–0.05 and the Ca-free composition of this compound is determined to be (Bi1/3Cu2/3)Sr2RECu2Oz. Since ionic radii of Y, Dy and Ho are very close to each other and this seems to be an essential factor for the stability of the (Bi,Cu)-“1-2-1-2”.},
 pages = {S31--S32},
 title = {Synthesis and characterization of (Bi,Cu)Sr2(RE,Ca)Cu2Oz},
 volume = {470},
 year = {2010}
}