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원자번호 품 명 원자기호 주 적용 분야
57 lanthanum
La
Optical Glass/Fiber, Ceramic, Battery, Catalyzer
58 cerium
Ce
Glass (Decolorant, Abradant), Auto (Emission Catalyzer),Phosphor, Ceramic, Magnet
59 praseodymium
Pr
Permanent Magnet, Laser, Paint
60 neodymium
Nd
Permanent Magnet, Laser, Condenser,Optical Glass/Fiber, Ceramic
61 promethium
Pm
Optical Glass, Ceramic
62 samarium
Sm
Permanet Magnet
63 europium
Eu
Fluorescent (CRT, Fluorescent Lamp), Reactor Control Catalyzer
64 gadolinium
Gd
Fluorescent Powder , Nuclear Reaction Catalyzer,Magnet, Electronics Glass
65 terbium
Tb
Fluorescent (CRT, Fluorescent Lamp), Self-Megnetic ElectrophoresisSubstance Material
66 dysprosium
Dy
Permanet Magnet, Self-Megnetic Electrophoresis Substance Material
67 holmium
Ho
Crystal Manufacturing, Laser
68 erbium
Er
Optical Glass/Fiber, Crystal Manufacturing
69 thulium
Tm
Crystal Manufacturing, Laser
70 ytterbium
Yb
Fluorescent Substance Activated Catalyzer,Ceramic, Magnetic Bubble, Laser, Optical Glass
71 lutetium
Lu
Crystal Manufacturing, Laser
21 scandium
Sc
Crystal Manufacturing, Ceramic
39 yttrium
Y
Fluorescent (CRT, Fluorescent Lamp), Ceramic Function Materia,Super Conductor