Controlled ion-beam transformation of electrical, magnetic, and optical materials properties

Abstract

Summary.Key circumstance of radical progress for technology of XXI century is the development of a technique which provides controllable producing three-dimensional patterns incorporating regions of nanometer sizes and required physical and chemical properties. Our paper for the first time proposes the method of purposeful direct transformation of the most important substance physical properties, such as electrical, magnetic, optical and others by controllable modification of solid state atomic constitution.The basis of the new technology is discovered by us effect of selective atom removing out of thin di-and polyatomic films by beams of accelerated particles. Potentials of that technique have been investigated and confirmed by our numerous experiments. It has been shown, particularly, that selective atom removing allows to transform in a controllable way insulators into metals, non-magnetics into magnetics, to change radically optical features and some other properties of materials.The opportunity to remove selectively atoms of a certain sort out of solid state compounds is, as such, of great interest in creating technology associated primarily with needs of nanoelectronics as well as many other "nano-problems" of XXI century.Introduction.

Selective removal of atoms as a new method for fabrication of single-domain patterned magnetic media and multi-layered nanostructures

“…If the maximum transferred energy exceeds the threshold value E d for atoms of only one kind then an opportunity appears of selective removal of only light (or only heavy) atoms from the two-or a multi-atomic crystal [2]. Thus one can reduce a concentration or to remove completely atoms of the desired kind in the proper layer of a crystal by selecting a necessary dose of irradiation.…”

Synergy of physical properties of low-dimensional carbon-based systems for nanoscale device design

“…Varying the size, shape, and relative positioning of nanostructures, even while maintaining their chemical composition, allows control over their properties, such as the melting point, solubility or transparency. Nanoscale structures can be produced from bulk materials using top-down approaches, such as ablation (the removal of a surface layer of a solid exposed to laser radiation [7][8][9] and/or plasma flux [10]) and selective removal of atoms from multicomponent compounds by ion [11] or electron beams [12]. Alternatively, nanoscale structures can be assembled from single atoms using bottom-up approaches, such as selective transfer of atoms from a probe tip of a scanning probe microscope onto a surface (approaching self-assembled structures with optimal design [13]) or chemical synthesis of atomically precise structures [14,15].…”

The use of ion irradiation for converting superconducting thin-film NbN into niobium oxide Nb2O5

“…These methods allow one to selectively alter the atomic composition of thin-film materials in a controllable manner. The first is the selective atom removal (SAM) method, which enables one to alter the atomic composition of a material by removing certain atomic species from di-or polyatomic compounds in a controllable manner [1,5]. The composition of thin-film materials was also altered successfully in the experiments with accelerated ions that induced radiation-stimulated effects associated with selective atom aggregation (SAA) and selective atom substitution (SAS) [6].…”