PLD 법으로 제조한 Cr-doped $(In_{0.95}Sn_{0.05})_2O_3$ [ITO]와 Mn-doped (Zn, Mg)O:P 자성 반도체의 성장 및 물성Growth and physical properties of Cr-doped $(In_{0.95}Sn_{0.05})_2O_3$ [ITO] and Mn-doped (Zn, Mg)O:P diluted magnetic semiconductors by pulsed laser deposition