Table 1 Characteristic switching pulse amplitudes.

From: Fast barrier-free switching in synthetic antiferromagnets

Case

Pulse shape, \( H_i(t)=4 \pi M_{\text {s}} h_i(t)\)

Amplitude, analytical \(\left( H_i^{\max } \right) \)

Amplitude, value at \(T \sim 3 \times 10 ^{-10}\) s (Oe)

1

\(H_1^{\max }/\text {ch} (t/T))\)

\( \hbar /2\mu _0 T\)

190

2

\(H_2^{\max }/\text {ch}^2 (t/T)\)

\( \pi \hbar /4 \mu _0 T\)

300

3

\(H_3^{\max } /[1+(t/T)^2]\), Lorentzian

\(\hbar /2\mu _0 T\)

190

4

\(H_4^{\max } \exp \left( -t/T\right) ^2\) , Gaussian

\(\sqrt{\pi }\hbar / 2 \mu _0 T\)

330