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Investigation of the acoustic properties of cobalt

“…Here, the obtained data coincide with those [7,8] on the temperature boundaries of the orientation phase transition, with the data [4,5] tion and with the data of [19,20] on the magnetic transition. The performed acoustic emission (AE) studies confirm the results of the acoustic investiga tions.…”

“…2a, we see the peculiarities in the behavior of the annealed samples in the temperature ranges of 210-310°C and 400-500°C. The obtained results are in good agreement with those of [4,5]. However, in [6], on the basis of investigation of the internal friction in cobalt, these domains are defined as ~400-500 K and 500-600 K (the α → β transi tion), which differs sufficiently from the data pre sented in [1,19,20].…”

“…The most interesting experimental data on the thermo physical properties of cobalt were obtained at the end of the previous century. In [4,5], the results are pre sented on studies of the ultrasound velocity and the attenuation coefficient; in [6,7], on the internal fric tion; and in [8], on the heat capacity. Note that the authors [7,8] pay primary attention to the studied property behavior in the domain of the orientation phase transition [9].…”

“…Note that the authors [7,8] pay primary attention to the studied property behavior in the domain of the orientation phase transition [9]. However, in [4][5][6], an essential description takes place in the estimate of the tempera ture boundaries of the anomalous behavior of the investigated properties. Thus, of significant scientific and practical interest are experimental investigations of the properties including the acoustic, acoustic emission, and the relative thermal expansion of cobalt.…”

Null branes in string theory backgrounds

“…To our knowledge, the only papers till now devoted to the classical dynamics of null p-branes (p > 1) moving in curved space-times are [15,16,17].…”