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Topic Area: Nanomagnetics

Displaying records 131 to 140 of 217 records.
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131. Low-temperature Growth of GMR Spin Valves
Topic: Nanomagnetics
Published: 1/1/1996
Authors: William F. Egelhoff Jr., R Misra, T Ha, Y Kadmon, Cedric John Powell, Mark D Stiles, Robert D McMichael, Lawrence Herman Bennett, C Lin, J Sivertsen, J Judy
Abstract: We have investigated the dependence of the giant magnetoresistance (GMR) effect, the coercivity, the coupling field, and the resistivity on film deposition at low-substrate temperatures (150 K) in spin valve multilayers of the general type: FeMn/Ni^ ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620460

132. Magnetization Reversal in Ultrathin Films with Monolayer-Scale Surface Roughness
Topic: Nanomagnetics
Published: 1/1/1996
Authors: A Moschel, A Zangwill, R Hyman, Mark D Stiles
Abstract: The intrinsic anisotropy of nominally flat, ultrathin ferromagnetic films typically is augmented by a uniaxial anisotropy at step edges. We report model calculations of hysteresis for such systems with in-plane magnetization and monolayer scale rou ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620472

133. Optimizing the GMR of Symmetric and Bottom Spin Valves
Topic: Nanomagnetics
Published: 1/1/1996
Authors: William F. Egelhoff Jr., P J Chen, Cedric John Powell, Mark D Stiles, Robert D McMichael, C Lin, J Sivertsen, J Judy, K Takano, A Berkowitz, T Anthony, J Brug
Abstract: We have attempted to optimize the values of the giant magnetoresistance in symmetric spin valves of the type NiO/Co/Cu/Co/Cu/Co/NiO (achieving 23.4%) and in bottom spin valves of the type Co/Cu/Co/NiO (achieving 17.0%), the largest values ever repor ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620461

134. Spin-Dependent Interface Transmission and Reflection in Magnetic Multilayers
Topic: Nanomagnetics
Published: 1/1/1996
Author: Mark D Stiles
Abstract: First-principles calculations of transmission and reflection from Ag/Fe, Au/Fe, Cu/Co, and Cu/Ni interfaces show very strong spin dependence that differs signifcantly from expectations based on free electron approximations. The results can be used t ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620462

135. The Trade-off Between Large GMR and Small Coercivity in Symmetric Spin Valves
Topic: Nanomagnetics
Published: 1/1/1996
Authors: William F. Egelhoff Jr., P J Chen, Cedric John Powell, Mark D Stiles, Robert D McMichael, C Lin, J Sivertsen, J Judy, K Takano, A Berkowitz
Abstract: We have investigated the use of various alloys as substitutes for pure Co in the center film of symmetric spin valves of the type NiO/Co/Cu/Co/Cu/Co/NiO. The aim of this work is to identify magnetic materials that exhibit smaller coercivities than pu ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620487

136. SEMPA Studies of Exchange Coupling in Magnetic Multilayers
Topic: Nanomagnetics
Published: 10/1/1995
Authors: Robert Celotta, Daniel Thornton Pierce, John Unguris
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620448

137. Comment on Exchange Coupling in Magnetic Multilayers: A Quantum-Size Effect
Topic: Nanomagnetics
Published: 1/1/1995
Authors: P Bruno, Mark D Stiles, Y Yafet
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620442

138. Domain Structures in Magnetoresistive Granular Metals
Topic: Nanomagnetics
Published: 1/1/1995
Authors: A Gavrin, Michael H Kelley, J Xiao, C Chien, Robert Celotta
Abstract: We have imaged the magnetic domain structure of several heterogeneous Co^dx^Ag^d1-x^ alloys by using scanning electron microscopy with polarization analysis. These images show that extended domain structures exist in both the as-deposited samples and ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620445

139. Influence of Thickness Fluctuations on Exchange Coupling in Fe/Cr/Fe Structures
Topic: Nanomagnetics
Published: 1/1/1995
Authors: Joseph A Stroscio, Daniel Thornton Pierce, John Unguris, Robert Celotta
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620443

140. Magnetoresistance Values Exceeding 21 Percent in Symmetric Spin Valves
Topic: Nanomagnetics
Published: 1/1/1995
Authors: William F. Egelhoff Jr., T Ha, R Misra, Y Kadmon, J Nir, Cedric John Powell, Mark D Stiles, Robert D McMichael, C Lin, J Sivertsen, J Judy, K Takano, A Berkowitz, T Anthony, J Brug
Abstract: We report values of the giant magnetoresistance (GMR) effect exceeding 21% in symmetric spin valves, the highest values ever reported for such structures. The key elements in this achievement are the use of a Co/Cu/Co/Cu/Co multilayer in which the c ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=620458



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