Time-Dependent Neutron Depolarization: A Novel Method in Magnetic Materials Research

AbstractA novel method is proposed whereby non-magnetic objects can be moved along a surface at the microscale and nanoscale. It uses a negative magnetophoretic force, explained in the caption for figure one, on the non-magnetic objects which results from stabilized 10nm diameter iron oxide particles (ferrofluid) being attracted to regions of field maxima around magnetic islands on a surface, which pushes the non-magnetic objects to regions of field minima. By varying an external magnetic field we can control where these minima are and thus control how objects will position themselves with static fields and by using rotating time varying fields we can control how they move across the surface. This method does not require the objects to be initially in contact with the surface, as they will be pulled down to the surface from solution. While this paper deals with beads, any arbitrarily shaped object should be manipuable using this method. Additionally, while we address non-magnetic objects in this work similar methods could easily manipulate objects that are magnetic.

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Electronic and magnetic properties of an AlN monolayer doped with first-row elements: a first-principles study

RSC Advances ◽

10.1039/c4ra13522a ◽

2015 ◽

Vol 5 (24) ◽

pp. 18352-18358 ◽

Cited By ~ 28

Author(s):

Yujie Bai ◽

Kaiming Deng ◽

Erjun Kan

Keyword(s):

Magnetic Properties ◽

Magnetic Materials ◽

First Principles ◽

Nano Materials ◽

Two Dimensional ◽

Electronic And Magnetic Properties ◽

First Principles Study ◽

Materials Research

Two-dimensional (2D) magnetic materials are the focus of one of the most active areas of nano-materials research.

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A theory of neutron depolarization from random magnetic materials

Solid State Communications ◽

10.1016/0038-1098(87)91001-5 ◽

1987 ◽

Vol 62 (5) ◽

pp. 369-371 ◽

Cited By ~ 2

Author(s):

S.K. Hasanain ◽

M.S. Zubairy ◽

A.H. Nayyar

Keyword(s):

Magnetic Materials ◽

Neutron Depolarization

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Synchrotron Radiation Studies of Magnetic Materials

MRS Proceedings ◽

10.1557/proc-143-45 ◽

1988 ◽

Vol 143 ◽

Cited By ~ 1

Author(s):

J. L. Erskine ◽

C. A. Ballentine ◽

Jose Araya-Pochet ◽

Richard Fink

Keyword(s):

Synchrotron Radiation ◽

Magnetic Materials ◽

Predictive Modeling ◽

Surface Characterization ◽

Spectroscopic Techniques ◽

Materials Synthesis ◽

Synthesis Techniques ◽

Recent Advances ◽

Materials Research ◽

Synchrotron Radiation Instrumentation

AbstractNew opportunities for research on magnetic materials are emerging as a result of quiet revolutions in several areas including: materials synthesis techniques, surface characterization capabilities, new magnetic sensitive detectors and spectroscopic techniques, improved synchrotron radiation instrumentation, and predictive modeling based on first principals calculations. This paper describes some of the more recent advances and assesses some of the new opportunities that are emerging in the field of magnetic materials research.

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