The conventional IBAD (Ion Beam Assisted Deposition) process using fluorite materials yields low production rates, resulting in high production cost, which reduces the motivation for practical application in spite of its high quality. The IBAD process using rock salt materials, e.g. MgO, is well known as a strong candidate of practical application due to its potential of high production rate and high in-plane grain alignment.In this work, the IBAD-MgO process was investigated for a newly developed architecture of PLD (Pulsed Laser Deposition)-CeO 2 /sputter-LMO (LaMnO 3 )/IBAD-MgO/sputter-GZO (Gd 2 Zr 2 O 7 )/Hastelloy TM to make long buffered metal tapes with high properties and a high production rate. The 50m-long IBAD-MgO substrates with about 4° of ΔφCeO 2 in an XRD φ scan could be fabricated repeatedly. A GdBCO (GdBa 2 Cu 3 O x ) layer deposited on the buffered substrate showed the minimum I c value of 325A/cm-w in a 41m-long tape. Almost of the tape showed 500–600A/cm-w of I c value.The deposition time for the IBAD-MgO layer was 60s which was about 2 orders of magnitude shorter than the conventional IBAD process. The production rate of 24m/h was realized at the IBAD-MgO process to fabricate the GdBCO coated conductor with high J c and I c properties.