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Microstructure and Magnetic Properties of Ag/Fe/Ag Pseudo-Sandwich Nanogranular Films
Yan Peng, Yan-ying Hu, Yao-peng Li, Hui-yuan Sun*
Author NameAffiliationE-mail
Yan Peng College of Physics Science and Information Engineering, Hebei Normal University, Shijiazhuang 050016, China  
Yan-ying Hu College of Physics Science and Information Engineering, Hebei Normal University, Shijiazhuang 050016, China  
Yao-peng Li College of Physics Science and Information Engineering, Hebei Normal University, Shijiazhuang 050016, China  
Hui-yuan Sun* College of Physics Science and Information Engineering, Hebei Normal University, Shijiazhuang 050016, China hysun@165e.com 
Abstract:
"Nanogranular Ag/Fe/Ag films were prepared by magnetron sputtering from a silver and an iron target onto glass substrates at room temperature and subsequent in situ annealing. The structural and magnetic properties of the films were investigated as a function of silver layer thickness and annealing temperature. X-ray diffraction shows the Fe(110) peak is formed in all the samples. Vibrating sample magnetometer measurements indicate that the magnetic moments lie well perpendicular to the film plane. Coercivityreaches the maximum in the sample annealed at 500 oC for 30 min with 3 nm Ag layer. A scanning probemicroscope was used to scan surface morphology and magnetic domain structures. In as-deposited samplesthe average grain size and the average roughness is smaller than that the annealing samples. After annealing,the grain size is larger and the contrast of domains increases, but the domain size becomes smaller."
Key words:  Magnetron sputtering, Granular film, Coercivity
FundProject:
Ag/Fe/Ag 纳米颗粒膜磁特性和微结构
彭燕,胡彦英,李耀鹏,孙会元*
摘要:
"利用对靶磁控溅射法制备了一系列Ag/Fe/Ag纳米薄膜,沉积态样品Fe层厚度固定为35 nm,Ag层厚度为1、2、3、4、5 nm.随后对沉积态样品进行了退火处理,退火温度分别为200、300、400、500、600 ℃ , 退火30 min. 利用VSM测量了样品的磁特性, 利用SPM观察样品表面形貌和磁畴结构,并且利用XRD分析了样品的晶体结构.研究结果表明,沉积态样品随Ag层厚度的变化,垂直和平行膜面矫顽力均先增加后减小.当Ag层厚度为3 nm时,垂直膜面矫顽力最大约为260 Oe,样品颗粒分布均
关键词:  纳米颗粒膜,矫顽力,磁控溅射,退火
DOI:10.1088/1674-0068/20/06/773-778
分类号: