On highly-textured IBAD-MgO templates, we have tried to find proper buffer layers among various candidate materials, including $LaMnO_3$ (LMO), $La_2Zr_2O_7$ (LAO), $LaAlO_3$ (LAO), $LaGaO_3$ (LGO), $NdGaO_3$ (NGO), and $BaZrO_3$ (BZO). All buffer layers were deposited on the IBAD-MgO templates by KrF pulsed laser deposition(PLD). LAO layer showed an armorphous phase. LZO, LGO, and NGO layers showed polycrystalline growth. Only LMO and BZO layers exhibited c-axis oriented biaxially textured films. Optimally processed LMO buffer layer at deposition temperature of $750^{circ}C$ and $PO_2$ of 100mTorr exhibited ${ riangle}{phi}$ value of ${sim}-5.2^{circ}$ and RMS roughness of 5.6nm. Interestingly, BZO buffer layers with ${ riangle}{phi}$ values of ${sim}-6^{circ}$ could be routinely produced over a wide PLD processing condition.