Creation of localized NV center ensembles, produced by irradiation of CVD diamond with nitrogen doped delta-layer with 200 keV electron beam and the subsequent annealing is demonstrated. Results of optical measurements of activated areas at different irradiation doses are presented. Issues concerning defect formation in diamond lattice during the electron beam impact are discussed.
The fundamental possibility of measuring the stray fields distributions of magnetic objects in a scanning electron microscope is demonstrated. The main idea of the method is to use a sample holder for operation in the mode of a scanning transmission microscope, additionally equipped with a square diffraction grating. This grating, formed on the basis of a metal film, is placed at some distance under the magnetic sample. Reconstruction of the deflections of transmitted electrons by analyzing the geometric phase from visible distortions of the diffraction grating made it possible to reconstruct the distribution of the magnetic field created by the sample under study.
Приводятся результаты исследования низкочастотного ферромагнитного резонанса в системе двух п ерекрывающихся пермаллоевых дисков методом магнитно-резонансной силовой спектроскопии. Показано, что резонансная частота гиротропной моды колебаний магнитных вихрей в данной системе существенно зависит от направления завихренности их оболочек. Экспериментальные зависимости резонансных частот различных состояний от внешнего магнитного поля качественно согласуются с результатами микромагнитного моделирования. Ключевые слова: ферромагнитный резонанс, магнито-резонансная силовая спектроскопия, магнитные вихри.
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