Results from the Suzaku X-ray broad-band observations of clusters of galaxies are summarized .
Aiming at understanding the physics of gas heating/particle acceleration and the cluster dynamical evolution , we search for non-thermal hard X-ray emission from merging clusters , particularly A2163 and the Bullet Cluster , based on the Suzaku and XMM-Newton / Chandra joint analyses .
The observed hard X-ray emission is well represented by single- or multi-temperature thermal models , including super-hot ( kT \sim 20 keV ) gas .
However , no significant non-thermal hard X-ray emission has been detected .
Together with the presently available literature , the hard X-ray properties have been studied for about 10 clusters with Suzaku .
The present status on Suzaku measurements of non-thermal X-ray emission and the cluster magnetic field are summarized and compared with those from the RXTE , BeppoSAX , and Swift satellites .
The future prospects are briefly mentioned .