On the Surface Stress and Surface Pressure in Clusters and Small Particles

Petrov, Yu. I.

doi:10.1142/9789812815828_0019

Cited by 18 publications

(33 citation statements)

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“…The process completes at outside border of the "condensation zone" (4) where the gas temperature reduces as much as the cooled particles cannot already coagulate. As the gas pressure increases, the condensation region stretches and appears inside the vacuum chamber (2). At the gas pressure higher than several thousands of Pa a well visible cloud of the aerosol particles is formed around the evaporator.…”

Section: Sample Preparationmentioning

confidence: 99%

“…With decreasing size of multidomain particles a single domain state becomes energetically more favorable [1,2]. As this takes place, the probability of the Browniankind motion for the saturation magnetization vector of one particle I S increases.…”

Section: Magnetism Of Iron Nanoparticlesmentioning

confidence: 99%

“…Surface conditions, in particular a state of oxide shell, play certainly an important role [18]. However, a wide-world point of view on existence of surface tensions compressing particles is erroneous [33][34][35].…”

Section: Magnetism Of Iron Nanoparticlesmentioning

confidence: 99%

“…of Ni by Mn in ternary FeNiMn alloy with approximately constant Fe content of about 65% in both massive and highdispersed samples [43,60,61]. The alloy composition can be written as Fe 65 (Ni 1−x Mn x ) 35 (0 ≤ x ≤ 1) having in mind that a deviation of Fe content from 65% does not exceed 4% in individual samples. It is seen in Figure 14 that a general behaviour of concentration dependence for fcc lattice constants of alloys under study looks like that obtained by Shiga [62].…”

Section: Fenimentioning

confidence: 99%

“…Nowadays investigation of the properties of Fe-based nanoparticles is of much interest from fundamental and applied standpoints [1][2][3]. These particles have high coercivity, and, according to estimates, they are single domain.…”

Section: Introductionmentioning

confidence: 99%

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Structure and Magnetic Properties of Aerosol Nanoparticles of Fe and Its Alloys

Petrov

Shafranovsky

2012

International Journal of Inorganic Chemistry

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Structure and magnetic properties of aerosol nanoparticles of Fe and its alloys (FeMn, FeNi, FeNiMn, FePt, FeCr, FeCo, and FeCu) have been reviewed. It has been shown that, compared to a bulk material, the particles have a number of specific features being of much fundamental and applied interest. The effect of both a quenched high-temperature Fe modification and its oxides on the structure and magnetism of nanoparticles has been considered in detail. Particular attention has been paid to the recently observed fine structure in the hyperfine field distribution at iron nuclei in Mössbauer spectra for pure iron and its alloys both as a bulk and aerosol nanoparticles. This phenomenon makes it possible to reveal very weak magnetic interactions in the system under study. The plausible origin of these magnetic interactions has been also discussed.

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Section: Sample Preparationmentioning

confidence: 99%

Section: Magnetism Of Iron Nanoparticlesmentioning

confidence: 99%

Section: Magnetism Of Iron Nanoparticlesmentioning

confidence: 99%

Section: Fenimentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Structure and Magnetic Properties of Aerosol Nanoparticles of Fe and Its Alloys

Petrov

Shafranovsky

2012

International Journal of Inorganic Chemistry

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Quantum Effects Based Materials for Nanosensory Systems

Kervalishvili

Berberashvili

2013

Black Sea Energy Resource Development and Hydrogen Energy Problems

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Development of sensory elements, devices and novel information technologies based systems is unique for solving organization difficulties of multiparametral and precise measurements of hydrocarbons and related substances. An effective prevention implies sensory system that provides combines and interprets applicable individual information in due time and then takes appropriate measures. Such sensory systems should record data as soon as an action is necessary. Utilization of quantum effects in solid state systems opened a new way for elaboration of novel sensory materials and devices widely using the nanoscience and nanotechnology methods for their preparation.One of the most suitable examples of nano and quantum effects connection is the process of the spin-polarized transport of charge in -ferromagnetic semiconductor nanolayers with controlled disorder. Operation of a spintronic device requires efficient spin injection into a semiconductor, spin manipulation, control and transport, and spin detection. The relevant role in solution of this problem is shunted to search and investigations of new ferromagnetic materials, which are capable to be reliable spin injectors and effective memory resistors as well.The execution of researches within the framework of the given chapter will allow studying the quantum effects in ferromagnetic nanolayers with controlled disorder. The most essential mechanisms, responsible for the transport properties, electronic and magnetic structures of these materials were determined. It also served as basis for creation of practical spinelectronics sensory devices having in their structure the interfaces such as ferromagnetic discrete alloy -non-magnetic semiconductor.

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