The 82nd JSAP Autumn Meeting 2021

Presentation information

Oral presentation

11 Superconductivity » 11.4 Analog applications and their related technologies

[12a-N403-1~7] 11.4 Analog applications and their related technologies

Sun. Sep 12, 2021 9:00 AM - 11:00 AM N403 (Oral)

Akira Kawakami(NICT), Hiroyuki Shibata(北見工大)

9:15 AM - 9:30 AM

[12a-N403-2] Preparation of Nb3Ge superconducting thin films with radiation heating 2

Akira Kawakami1, Hirotaka Terai1, Yoshinori Uzawa2 (1.NICT, 2.NROJ)

Keywords:SIS mixer, Nb3Ge, THz

To realize a 1.5 THz band SIS mixer, we are studying the deposition method of the Nb3Ge thin film, which is an A15 type superconducting material. The multiple simultaneous sputtering method was used as the film deposition system. For the purpose of increasing the area of the substrate, we tried the radiant heating method, which heats the substrate without contact with the heater, directly. We succeeded in forming an Nb3Ge thin film with a superconducting transition temperature of 17.2 K and a resistivity of 58.9 μΩ cm on a 2-inch sapphire substrate.