28 Result(s)

Chapter

Structural Investigations of Membranes in Biology by Neutron Reflectometry

C. F. Majkrzak, N. F. Berk, S. Krueger, U. A. Perez-Salas in Neutron Scattering in Biology (2006)

Reference Work Entry At a glance

Neutron reflectometry

Neutron reflectivity is a powerful tool for the study of surface layers and interfaces. Topics covered in this chapter include: the theory of elastic specular neutron diffraction; polarized neutron reflectivit...

G. S. Smith, C. F. Majkrzak in International Tables for Crystallography V… (2004)

Article

Advances in specular neutron reflectometry

Specular neutron reflectometry provides a depth profile of the scattering length density (SLD) and, ultimately, of the chemical and magnetic composition of a layered material. To date, numerous productive appl...

C.F. Majkrzak, N.F. Berk in Applied Physics A (2002)

Article

Polarized neutron reflectometry studies of GaMnAs/GaAs superlattices

Polarized neutron reflectometry has been used to investigate details of spin ordering in ferromagnetic (FM) GaMnAs/GaAs superlattices. The reflectivity spectra measured below the Curie temperature reveal addit...

H. Kvepa, J. Kutner-Pielaszek, A. Twardowski, C.F. Majkrzak, T. Story… in Applied Physics A (2002)

Article

Extracting buried twists with polarized neutron reflectometry

Polarized neutron reflectometry can extract the depth-dependent magnetization of thin-film magnets more precisely than other techniques, which are limited to a measurement of the average moment or the moment a...

K.V. O’Donovan, J.A. Borchers, C.F. Majkrzak, O. Hellwig… in Applied Physics A (2002)

Chapter

Neutron Reflectivity Studies of Single Lipid Bilayers Supported on Planar Substrates

Neutron reflectivity was used to probe the structure of single phosphatidylcholine (PC) lipid bilayers adsorbed onto a planar silicon surface in an aqueous environment. Fluctuations in the neutron scattering l...

S. Krueger, B. W. Koenig, W. J. Orts, N. F. Berk, C. F. Majkrzak… in Neutrons in Biology (1996)

Article

Bulk and Surface Structure of a Ternary Microemulsion

Microemulsions are isotropic mixtures of water, oil, and surfactant which self-assemble to form interfacial monolayers with a characteristic length scale on the order of hundreds of Angstroms. Small angle neut...

D. D. Lee, S. H. Chen, S. K. Satija, C. F. Majkrzak in MRS Online Proceedings Library (1994)

Article

Growth and Dissolution of Protective Oxide Films on Titanium: an in-Situ Neutron Reflectivity Study

The structure and morphology of titanium thin film electrodes have been investigated by neutron reflectometry. This technique yields a detailed depth profile of the scattering density, which is used to determi...

D. G. Wlesler, C. F. Majkrzak in MRS Online Proceedings Library (1994)

Article

Polarized Neutron Glancing-Angle Diffraction Study of Magnetic Structure at the Y/Gd(0001) Interface

By exciting diffraction in the Laue geometry by specularly reflected beams, penetrating x-rays and neutrons can be used to probe surface and interfacial atomic structure. We present the first such measurement ...

J. F. Ankner, P. D. Gallagher, A. Schreyer, H. Zhang… in MRS Online Proceedings Library (1994)

Article

Magnetic Structure Determination for Annealed Ni₈₀Fe₂₀/Ag Multilayers Using Polarized-Neutron Reflectivity

Sputtered Ni₈₀Fe₂₀/Ag multilayers, annealed post-growth, show giant magnetoresistive (GMR) effects at unusually low magnetic fields (≈ 5 Oe)[l]. Structural characterization by cross-sectional TEM[2] and x-ray dif...

J. A. Borchers, P. M. Gehring, C. F. Majkrzak… in MRS Online Proceedings Library (1994)

Article

Analyzing Specular Reflectivities with Parametric B-Splines

A method of using parametric B-spline curves to interpret neutron and x-ray specular reflectivity spectra is described. The introduction of parametric curves for scattering length density profiles greatly expa...

N. F. Berk, C. F. Majkrzak in MRS Online Proceedings Library (1994)

Article

Quantitative Analysis Of Polarized Neutron Specular Reflectivity From a Co/Cu(111) Superlattice at the Second Antiferromagnetic Maximum

We have used polarized neutron reflectivity to prove the existence of oscillatory coupling in MBE-grown Co/Cu(111) superlattices. For a sample of composition [3.4 nm Co/2.0 nm Cu]₁₀, we find that only a small fra...

J.F. Ankner, A. Schreyer, C.F. Majkrzak, K. Bröhl… in MRS Online Proceedings Library (1993)

Article

Dynamical Scattering of Polarized Neutrons by Thin Magnetic Films

Using Larmor precession as a clock, Büttiker¹ identified theoretical times for the scattering of particles from an opaque slab coincident with a magnetic field. The subsequent model generated interesting predicti...

V. Nunez, C.F. Majkrzak, N.F. Berk in MRS Online Proceedings Library (1993)

Article

Chemical grafting of silane end-functionalized polymer on silicon surfaces

X-ray and neutron reflectivity was used to determine the kinetics of adsorption and characterize the concentration profile of a low molecular weight trichlorosilane end- functionalized polystyrene adsorbed ont...

A. Karim, S.K. Satija, W. Orts, J. F. Ankner… in MRS Online Proceedings Library (1993)

Chapter

The ordering of thin films of symmetric diblock copolymers

The ordering of thin films of symmetric diblock copolymers of polystyrene and polymethylmethacrylate has been investigated by neutron reflectivity. It is shown that the order-disorder transition temperature de...

T. P. Russell, A. Menelle… in Application of Scattering Methods to the D… (1993)

Chapter and Conference Paper

Specular and Diffuse Scattering Studies of Multilayer Interfaces

The results of specular and diffuse x-ray scattering studies of multilayers are discussed. We show here that such studies can yield detailed statistical information about the interfacial roughness and morpholo...

M. K. Sanyal, S. K. Sinha, A. Gibaud, S. K. Satija… in Surface X-Ray and Neutron Scattering (1992)

Article

The Volume Fraction Profile of Terminally Adsorbed Polymers

We have used neutron reflectivity to measure the concentration profile of carboxylic acid-terminated polystyrene at the liquid/solid interface. Two isotopic systems were studied: (1) deuterated polystyrene (DP...

R. J. Composto, T. Mansfield, G. Beaucage, R. S. Stein… in MRS Online Proceedings Library (1991)

Article

X-Ray Scattering Studies of Multilayer Interfaces

The results of specular and diffuse x-ray scattering studies of multilayers are discussed. We show here that such studies can yield detailed statistical information about the interfacial roughness and morpholo...

M. K. Sanyal, S. K. Sinha, A. Gibaud, S. K. Satija… in MRS Online Proceedings Library (1991)

Article

Reflectivity and Grazing Angle Diffraction of Polarized Neutrons

Using polarized-neutron reflectivity, one can determine the layer-averaged magnetic structure of films and multilayers with exquisite precision. By employing the closely related phenomenon of grazing-angle dif...

J. F. Ankner, C. F. Majkrzak, D. A. Neumann, A. Matheny… in MRS Online Proceedings Library (1991)

Chapter

The Characterization of Interface Roughness and Other Defects in Multilayers by X-Ray Scattering

In this paper we present some theoretical and experimental results on the characterization of roughness in thin films and multilayers by scattering techniques. Particular attention is focussed on the differenc...

S. K. Sinha, M. K. Sanyal, A. Gibaud… in Science and Technology of Nanostructured M… (1991)