论文标题

R0.6SR0.4MNO3(R = PR和ND)中的微波磁磁盘吸附

Microwave magnetoabsorption in R0.6Sr0.4MnO3 (R = Pr and Nd)

论文作者

Chanda, A., Chaudhuri, U., Mahendiran, R.

论文摘要

我们在R0.6SR0.4MNO3(R = PR和ND)样品中报告的微波磁磁功能(P)。使用矢量网络分析仪和铜带线圈,测量了P作为DC磁场(-2.5 KOE至+2.5 KOE)的DC磁场(-2.5 KOE至+2.5 KOE)的函数。随着外部直流磁场从最大场减小,p最初会增加并显示临界场的最大值,然后随着场接近零而减小。临界场随微波信号的频率增加而增加。所获得光谱的线形分析表明,p中观察到的特征是由r = r = nd样品中的R = PR和电子顺磁共振(ESR)中的铁磁共振(FMR)引起的,使用基于Coplanar的基于Coplanar波导的宽带磁共振光谱仪证实。

We report microwave magnetoabsorption (P) at room temperature in R0.6Sr0.4MnO3 (R = Pr and Nd) samples. P as a function of dc magnetic field (-2.5 kOe to +2.5 kOe) was measured for a broad frequency range (f = 0.1 - 4 GHz) of microwave magnetic field using a vector network analyzer and a copper strip coil which encloses one of the above samples. As the external dc magnetic field decreased from the maximum field, P initially increases and shows a maximum for a critical field and then decreases as the field approaches zero. The critical field increases with increasing frequency of the microwave signal. Line shape analysis of the obtained spectra suggests that the observed features in P are caused by ferromagnetic resonance (FMR) in R = Pr and electron paramagnetic resonance (ESR) in R = Nd samples, which were confirmed using a coplanar waveguide-based broadband magnetic resonance spectrometer.

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