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Growth, Structure and Magnetism in Co/W(111) and Co/Faceted Pd/W{112}

By 蔡承叡 and Cheng-Jui Tsai

Abstract

[[abstract]]The crystalline structure and magnetism of Co/W(111) and Co/faceted Pd/Wf112g surface are studied with low energy electron di raction (LEED), Auger electron spectroscopy (AES), temperature programmed thermal desorption (TPD) and magneto-optical Kerr e ect (MOKE). We nd that Co/W(111) has revealed in-plane ferromagnetic ordered for room temperature growth mode and both of in-plane and perpen- dicular magnetism for low temperature growth mode. Co undergo well epitaxial on W(111) because of the small lattice mismatch in a speci c orientaion. Co/faceted Pd/Wf112g reveals two-step hysteresis loops and we infer that alloys are formed. There is 40 Oe reduction in the magnetic coercivity of Co/faceted Pd/Wf112g when 1.8 langmuir hydrogen is dosed with 1.8 Langmuir.

Topics: 皺化;磁性;晶體結構;溫控熱脫附;磁光科爾效應;歐階電子能譜儀, faceted;magnetism;crystalline structure;TPD;MOKE;AES, [[classification]]38
Year: 2011
OAI identifier: oai:ir.lib.ntnu.edu.tw:309250000Q/70579
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