In this work, we studied the phase transitions and exchange bias of Ni50−xMn36Sn14Tx (T = Pd, Pt; x = 0, 1, 2, 3) alloys. An intermartensitic transition (IMT), not observed in Ni50Mn36Sn14 alloy, was induced by the proper application of negative chemical pressure by Pd(Pt) doping in Ni50−xMn36Sn14Tx (T = Pd, Pt) alloys. IMT weakened and was suppressed with the increase of applied field; it also disappeared with further increase of Pd(Pt) content (x = 3 for Pd and x = 2 for Pt). Another striking result is that exchange bias effect, ascribed to the percolating ferromagnetic domains coexisting with spin glass phase, is notably enhanced by nonmagnetic Pd(Pt) addition. The increase of unidirectional anisotropy by the addition of Pd(Pt) impurities with strong spin-orbit coupling was explained by Dzyaloshinsky-Moriya interactions in spin glass phase.

Nanostructured ceria particles have been successfully synthesized by detonation method with emulsion explosives. The effects of mass content of Ce(NO 3 ) 3 ·6H 2 O in emulsion explosives on particle size of CeO 2 were investigated. X-ray diffraction (XRD) and Transmission Electron Microscope (TEM) were carried out to characterize as-synthesized powders. The ultraviolet absorption performance of nanostructured ceria was tested by ultraviolet spectrophotometer. The results indicated that the mass content of Ce(NO 3 ) 3 ·6H 2 O in emulsion explosives affected the particle size of ceria mostly. When the mass content of Ce(NO 3 ) 3 ·6H 2 O was 53.2%, the particle size of ceria was even and on the small side. The UV absorption performance of assynthesized nanostructured ceria was excellent, especially for ultraviolet B.