The 81st JSAP Autumn Meeting, 2020

Presentation information

Oral presentation

9 Applied Materials Science » 9.4 Thermoelectric conversion

[8p-Z18-1~16] 9.4 Thermoelectric conversion

Tue. Sep 8, 2020 12:30 PM - 5:15 PM Z18

Mikio Koyano(JAIST), Takahiro Tomita(東大), Takafumi Ishibe(Osaka Univ.)

3:45 PM - 4:00 PM

[8p-Z18-11] Study of thin films of the filled skutterudite Smy(FexNi1-x)4Sb12

〇(D)Giovanna Latronico1, Paolo Mele1, Cristina Artini2,3, Carlo Fanciulli3, Pietro Manfrinetti2, Saurabh Singh4, Tsunehiro Takeuchi4 (1.Shibaura IT, 2.Univ. of Genova, 3.CNR-ICMATE, 4.Toyota Tech. Inst.)

Keywords:Skutterudites, Thin Films, Pulsed Laser Deposition

In this work, we present our results on thin films of skutterudites Smy(FexNi1-x)4Sb12 with x = 0.63 (crossover n/p type). Films were prepared by pulsed laser deposition (PLD) on fused silica substrates focusing on dense pellets prepared by SPS a laser beam (YAG, λ = 266 nm) under the following conditions: frequency 10 Hz, dsub-target = 35 mm, Tdep = 20~300 ºC, tdep = 20~60 min, in PAr = 20~1000 mTorr or high vacuum (P = 10-4 Pa). We also examined the difference between as-deposited and annealed thin films (T = 150-300°C for 2h).
As a preliminary investigation, under SEM, the surface of the films appeared granular, and the size of grains decreases with the reduction of PAr. The XRD exposed that the films are amorphous and may require post-annealing. The transport and thermoelectric properties of as-deposited samples were measured between 300 K ~500 K using a home-made apparatus.