Block diagram of the experimental setup. Capacitive voltage probes are used as diagnostics and are found at the input and output of the NLTL.
FMR spectra of five different materials. The waveforms represent the derivative of absorbed power. The oscillatory nature prior to the main linewidth peak arises from spin-wave excitation.
NLTL Output waveforms for four different materials. The colors of each waveform correspond to the colors represented in Figure 2 . The materials are NiZn-1, MX5, MX7, and MX8 (moving left to right). Each material has a different linewidth (first—260 Oe, second—280 Oe, third—130 Oe, and fourth—120 Oe).
Center frequency versus magnetic bias field for incident voltages 20 kV (black-□), 25 kV (red-○), and 30 kV (blue-Δ).
NLTL outputs for 20 kV incident pulse magnitude and varying bias. The waveforms are arranged such that the bias field is increasing from left to right. For ease of viewing, the waveforms are time-shifted by 3 ns relative to each other.
The main figure contains the NLTL electrical delay versus biasing field at 20 kV (black-□), 25 kV (red-○), and 30 kV (blue-Δ). The gray line represents the calculated electrical length of the line when fully saturated. The inset figure contains waveforms for unbiased (0 kA/m, black, no oscillations) and fully biased (42 kA/m, red, oscillations present) outputs.
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