CAJ | 학술논문

制备了一系列具有铁磁/反铁磁交换偏置作用的[NiO/Fe65Co35]10多层膜,使用振动样品磁强计(VSM)测量了样品的静磁参数,利用微带线法测量了样品4GHz-10GHz的磁谱,首次制备并测得了自然共振频率(fr)在6GHz以上,最高到f=9.6GHz的薄膜样品.结果表明交换偏置场(Hex)、各向异性场(Hua)、以及矫顽力(Hc)随铁磁层厚度(tFM)增大而减小;基于Landau-Lifishitz (L-L)方程对静磁参量和磁谱进行了比较,发现样品自然共振频率较L-L方程计算值偏大30%以上.
제비료일계렬구유철자/반철자교환편치작용적[NiO/Fe65Co35]10다층막,사용진동양품자강계(VSM)측량료양품적정자삼수,이용미대선법측량료양품4GHz-10GHz적자보,수차제비병측득료자연공진빈솔(fr)재6GHz이상,최고도f=9.6GHz적박막양품.결과표명교환편치장(Hex)、각향이성장(Hua)、이급교완력(Hc)수철자층후도(tFM)증대이감소;기우Landau-Lifishitz (L-L)방정대정자삼량화자보진행료비교,발현양품자연공진빈솔교L-L방정계산치편대30%이상.
[NiO/Fe65 Co35]10 exchange-coupled multilayer films for high frequency applications are fabricated,and their microwave permeability is systematic studied.Both exchange bias field and ferromagnetic resonance frequency increase with decreasing Fe65 Co35 thickness.The microwave properties such as permeability and FMR frequency can be controlled by changing Fe65 Co35 thickness.Ferromagnetic resonance frequencies beyond 6 GHz are measured and reported for the first time.