The effect of oxygen deficiency on a phase transition from cubic to tetragonal phase has been investigated for the spinels with by measurements of differential scanning calorimetry (DSC), magnetic susceptibility nuclear magnetic resonance ( NMR) and electronic resistivity . According to the DSC measurements, the transition temperature for a stoichiometric compound is determined to be K. As increases from zero to 0.066, the magnitude of is found to decrease by about 4 K; then, the magnitude of increases by about 41 K with further increase of up to 0.10; thus, the curve exhibits a broad minimum at around . This relationship between and is also observed by the measurements of NMR and . The dependence of on is considered to be a result of a competition between a decrease in the average valence of Mn ions and a dilution of the nearest-neighbour interaction between Mn ions. Both effects are caused by the oxygen deficiency; the former raises , whereas the latter reduces it.

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The horizontal and depth distributions of the stress induced in silicon substrates with titanium silicide ( TiSi2) patterns were evaluated using the Raman microprobe. Tensile stress is generated beside the TiSi2 pattern. The tensile stress reaches a maximum value of 150–350 MPa at the distance of ∼0.5 µ m from the edge of the TiSi2 pattern, and the range of the tensile stress is as far as 2–4 µ m from the edge. Under the TiSi2 pattern, compressive stress is generated. The compressive stress becomes a maximum value of 25–75 MPa at the TiSi2/Si interface, and the depth of the compressive stress extends to 2–1 µ m.

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