Sajith Rajamohan
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Sajith Rajamohan has a total of 6 co-authors. Here are the top co-authors by number of shared publications:
Goran Majkic
Mechanical Engineering Department, University of Houston, Houston, TX, USA
1 shared publication- Manoj Thevalappilly Paulose
Mechanical Engineering Department, University of Houston, Houston, TX, USA
1 shared publication Robert Schmidt
Mechanical Engineering Department, University of Houston, Houston, TX, USA
1 shared publicationSarthak Diwan
Mechanical Engineering Department, University of Houston, Houston, TX, USA
1 shared publication- Venkat Selvamanickam
University of Houston
1 shared publication - Vishnu Pullanikkat
Mechanical Engineering Department, University of Houston, Houston, TX, USA
1 shared publication
Latest Publications
- 23 December 2024
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Applied Superconductivity
- Vol. 35 (5) , 1-5
Next-Generation Advanced MOCVD for Long REBCO Tapes
REBCO tapes exhibit considerable potential for application in high magnetic field devices such as compact fusion reactors and particle accelerators; next-generation electric machines such as high-efficiency industrial motors and high-power wind turbine generators; and electric aircraft. Our group had previously demonstrated an advanced metal organic chemical vapor deposition (A-MOCVD) method to produce 50-meter-long REBCO tapes with film thickness over 4 µm in a single pass, and a uniform critical current (Ic) over 1,750 A/12 mm at 65 K, 0.25 T. Further, for high magnetic field applications, 40-meter-long tapes have been made by A-MOCVD with an Ic over 4,000 A/12 mm at 4.2 K and 13 T, as well as over 1,400 A/12 mm at 20 K and 20 T. A laminar vapor path design in the A-MOCVD reactor enabled the growth of thick REBCO films with a high precursor-to-film conversion efficiency up to 45% (4x the conversion efficiency of conventional MOCVD of REBCO tapes). Subsequent advancements in the A-MOCVD process enabled simultaneous deposition of REBCO films on both sides of a double-sided buffered substrate, in a single pass. This yielded double-sided, 30-cm-long REBCO tapes with 3.4-µm-thick films on each side, which showed Ic over 530 A/4 mm at 20 K, 20 T. This paper reports our recent work on next-generation A-MOCVD design to scale up double-sided REBCO tapes to long lengths, with superior performance and an increased precursor-to-film conversion efficiency beyond 70%. Tape heating and precursor delivery methods incorporated in the new design aims to facilitate the scale-up of A-MOCVD for multi-track deposition for higher tape throughput.
- 23 December 2024
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Applied Superconductivity
- Vol. 35 (5) , 1-5
Next-Generation Advanced MOCVD for Long REBCO Tapes
REBCO tapes exhibit considerable potential for application in high magnetic field devices such as compact fusion reactors and particle accelerators; next-generation electric machines such as high-efficiency industrial motors and high-power wind turbine generators; and electric aircraft. Our group had previously demonstrated an advanced metal organic chemical vapor deposition (A-MOCVD) method to produce 50-meter-long REBCO tapes with film thickness over 4 µm in a single pass, and a uniform critical current (Ic) over 1,750 A/12 mm at 65 K, 0.25 T. Further, for high magnetic field applications, 40-meter-long tapes have been made by A-MOCVD with an Ic over 4,000 A/12 mm at 4.2 K and 13 T, as well as over 1,400 A/12 mm at 20 K and 20 T. A laminar vapor path design in the A-MOCVD reactor enabled the growth of thick REBCO films with a high precursor-to-film conversion efficiency up to 45% (4x the conversion efficiency of conventional MOCVD of REBCO tapes). Subsequent advancements in the A-MOCVD process enabled simultaneous deposition of REBCO films on both sides of a double-sided buffered substrate, in a single pass. This yielded double-sided, 30-cm-long REBCO tapes with 3.4-µm-thick films on each side, which showed Ic over 530 A/4 mm at 20 K, 20 T. This paper reports our recent work on next-generation A-MOCVD design to scale up double-sided REBCO tapes to long lengths, with superior performance and an increased precursor-to-film conversion efficiency beyond 70%. Tape heating and precursor delivery methods incorporated in the new design aims to facilitate the scale-up of A-MOCVD for multi-track deposition for higher tape throughput.