The Study of Anisotropy and Domain Condition of Permalloy Thin Films

Hysteretic Loops, 1,5; 3,0; 4,5; 6 and 10 nm in thickness, obtained by magnetron sputtering of Ni81Fe19 alloy, were measured by means of vibration magnetometer. It has been detected that by increasing the film thickness from 3 to 10 nm coercive force (HC) increases as well. In the direction perpendicular to the axis of easy magnetization the loop form considerably differs from the right-angled one, which is caused by amplitude dispersion of anisotropy. The films, derived in scattered magnetic field of the Earth, are by magnetic parameter isotropic. The results of atomic force microscope investigation indicate to the granular structure of films and confirms the presence of non-magnetized areas among the examined films. The critical thickness at which permalloy films pass from multi-domain to single-domain state was 10 nm. Estimation of the critical thickness of the transition from single-domain state to superparamagnetic led to the values of 1.5-2 nm. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3362

ЗМІСТ СФОРМОВАНОСТІ ГОТОВНОСТІ СТУДЕНТІВ ПЕДВУЗІВ ДО ДІАЛОГІЧНОГО НАВЧАННЯ

The article deals with the problem of content of students' readiness to the using of dialogue in educational process. Researching results show its influence on the effectiveness of dialogue education

ФОРМУВАННЯ ГОТОВНОСТІ СТУДЕНТІВ ДО ДІАЛОГІЧНОГО НАВЧАННЯ В ПЕДАГОГІЧНОМУ ЗАКЛАДІ

The means of the formation of students' readiness for dialogic training are introduced in the article. The author points out the methods of synthetic and analytic training give exercises for learning methods and for mastering practical skills of dialogic communication

УПРОВАДЖЕННЯ ОСОБИСТІСНО ОРІЄНТОВАНОГО НАВЧАННЯ ЗАСОБАМИ КОМ П’ЮТЕРНИХ ТЕХНОЛОГІЙ

In article to be considered problems personally focused training at use of computer technologies, a method of telecommunication projects

Measurements of spin rotation parameter A in pion-proton elastic scattering at 1.62 GeV/c

The ITEP-PNPI collaboration presents the results of the measurements of the spin rotation parameter A in the elastic scattering of positive and negative pions on protons at P_beam = 1.62 GeV/c. The setup included a longitudinally-polarized proton target with superconductive magnet, multiwire spark chambers and a carbon polarimeter with thick filter. Results are compared to the predictions of partial wave analyses. The experiment was performed at the ITEP proton synchrotron, Moscow.Comment: 7 pages, 3 figures. To be published in Phys. Lett.

Применение информационно-технических средств в управлении процессом подготовки и спортивном отборе студентов в скоростно-силовые виды спорта.

В настоящее время только на основе междисциплинарных исследований можно обеспечить качественное изменение и настоящий прорыв во многих областях знаний. Это приведет к созданию и внедрению инновационных методов управления в процесс спортивной подготовки. В статье обоснованы важные особенности выбора в студенческие команды скоростно-силовых видов спорта на основе динамики элементов рабочих моделей дыхательной и сердечно-сосудистой системы, высшей нервной деятельности

A measurement of the neutron lifetime using the method of storage of ultracold neutrons and detection of inelastically up-scattered neutrons

AbstractWe present estimations of systematic corrections and results of their experimental studies for our neutron lifetime experiment carried out in 2008–2010 at ILL. Taking into account these systematic corrections, we reduce the data of three independent sets of measurements (obtained during period 2008–2010) performed with different energy spectra of ultracold neutrons (UCNs) at different trap temperatures to the mean neutron lifetime value equal to 880.2(1.2) s

Selection of collector composition and temperature conditions for diamond foam separation

Quantitative and qualitative regularities of a collector low and high molecular weight fractions distribution between solid and liquid phases in foam separation process were determined with the use of extraction-spectrophotometrical technique. The feasibility of producing a collector with optimal ratio of fractions of light distillates, hydrocarbon oils, resin, and asphaltenes by mixing M-40 fuel oil with diesel fuel oil in specified ratios was substantiated. It was shown that applying compound collectors with M-40 fuel oil weight percentage of 60-70 enabled increasing diamond recovery by 2.7-3.5%. Similar increase was also achieved when using F-5 bunker fuel oil diluted by 10-18% with diesel oil fraction. The optimal temperature of 24 °C for initial ore feed conditioning with flotation agents and foam separation providing maximum diamond recovery into concentrate and high selectivity was determined. The proposed collectors and temperature conditions enabled increasing diamond recovery