Nonmagnetic matrix

Figure 9.1 Schematic representation of magnetic defects in a nonmagnetic matrix (a) impurity substituent and (b) impurity interstitial.

Cylindrically converging shock waves on powders were used to make mixtures of diamonds and hBN. BN fiber reinforced Zr02 was described . A nanostructured composite of magnetic particles of FOj N in a nonmagnetic matrix of BN is made via an inorganic geP. Fabrication of BN-B4 composites was reported . Consolidation of novel sintered composites formed from high pressure crystallization of amorphous ceramics was also described. The literature discusses other ceramics reinforced with BN fibers, as welF . ... 

Figure 10.23 shows a schematic of a Mdssbauer spectrometer. The radioactive Co source is embedded in a nonmagnetic matrix, which is chosen so as not to affect the sample or to absorb the y-rays too strongly. The system can be calibrated using Fe metal the six peaks seen in Figure 10.24 correspond to the six transitions expected for Fe. The Co source has an emission peak at 14.4 keV ... 

FMR experiments performed on fine particles dispersed in a nonmagnetic matrix (e.g., Fe, Co, Ni in polymer matrices,a-FcjOj in silica supported Ni particles ) show a progressive broadening of the absorption line, accompanied by the shift of the resonance field to lower values, as the temperature decreases. 

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