  The present work intends to complement the study of the regularity of the
solutions of the thermoelastic plate with rotacional forces. The rotational
forces involve the spectral fractional Laplacian, with power parameter $\tau\in
[0,1]$ ( $\gamma(-\Delta)^\tau u_{tt}$). Previous research regarding regularity
showed that, as for the analyticity of the semigroup $S(t)=e^{\mathbb{B}t}$ for
the Euler-Bernoulli Plate($\tau=0$) model, the first result was established by
Liu and Renardy, \cite{LiuR95} in the case of hinged and clamped boundary
conditions, for the case $\tau=1$ (Plate Kirchoff-Love) Lasiecka and Triggiani
showed, that the semigroup is not differentiable \cite{LT1998, LT2000} and more
recently in 2020 Tebou et al.\cite{Tebou2020} showed that for $\tau\in
(0,\frac{1}{2})$, $S(t)$ is of class Gevrey $s>\frac{2-\tau}{2-4\tau}$. Our
main contribution here is to show that $S(t)$ is of Gevrey class
$s>\frac{3-\tau}{2-2\tau}$ when the parameter $\tau$ lies in the interval
$[\frac{1}{2},1)$ and also show that $S(t)$ is not analytic for $\tau\in (0,1]$
both results for Hinged plate/ Dirichlet temperature boundary conditions.
