Growth of Single-Crystal Ca10(Pt4As8)(Fe1.8Pt0.2As2)5 Nanowhiskers with Superconductivity up to 33 K

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• 作者：Jun Li ; Jie Yuan ; Dai-Ming Tang ; Shou-Bao Zhang ; Meng-Yue Li ; Yan-Feng Guo ; Yoshihiro Tsujimoto ; Takeshi Hatano ; Shunichi Arisawa ; Dmitri Golberg ; Hua-Bing Wang ; Kazunari Yamaura ; Eiji Takayama-Muromachi
• 刊名：The Journal of the American Chemical Society
• 出版年：2012
• 出版时间：March 7, 2012
• 年：2012
• 卷：134
• 期：9
• 页码：4068-4071
• 全文大小：246K
• 年卷期：v.134,no.9(March 7, 2012)
• ISSN：1520-5126

文摘

Single-crystal Ca₁₀(Pt₄As₈)(Fe_1.8Pt_0.2As₂)₅ superconducting (SC) nanowhiskers with widths down to hundreds of nanometers were successfully grown in a Ta capsule in an evacuated quartz tube by a flux method. Magnetic and electrical properties measurements demonstrate that the whiskers have excellent crystallinity with critical temperature of up to 33 K, upper critical field of 52.8 T, and critical current density of J_c of 6.0 脳 10⁵ A/cm² (at 26 K). Since cuprate high-T_c SC whiskers are fragile ceramics, the present intermetallic SC whiskers with high T_c have better opportunities for device applications. Moreover, although the growth mechanism is not understood well, the technique can be potentially useful for growth of other whiskers containing toxic elements.