Index Catalog // ScholarsArchive@OSU

Modeling, Fabrication, and Characterization of Magnetic Thin Films for Integrated Inductor and MRAM Applications

Creator:: Buford, Benjamin
Abstract:: Magnetic thin films have potential to improve devices such as on-chip inductors, and enable new technologies such as magnetic random access memory (MRAM). The use of magnetic cores in on-chip inductors is typically limited to applications well under 1 GHz. At higher frequencies, the performance of the magnetic core is...
Resource Type:: Dissertation
Full Text:: MRAM Applications Abstract approved: Albrecht Jander Magnetic thin films have potential to improve

Soft Magnetic Composites for High Frequency Applications

Creator:: Song, Han
Abstract:: Soft magnetic composites, consisting of fine metallic particles in a non-magnetic, insulating matrix, have great potential for integrated inductor and antenna applications. The dielectric and magnetic properties of soft magnetic composites can be tailored by the choice of matrix as well as particle composition, size, and concentration for reduction in...
Resource Type:: Dissertation
Full Text:: : Albrecht Jander Soft magnetic composites, consisting of fine metallic particles in a non magnetic

Radiation tolerance of magnetic tunnel junctions with MgO barriers

Creator:: Ren, Fanghui
Abstract:: In the next decade, technology trends--smaller dimension, lower voltage, higher operating frequency--introduce new technical considerations and challenges for radiation effects in integrated circuits. Semiconductor based circuits and traditional dynamic random-access memories will malfunction when exposed to extreme environments, such as space and nuclear reactor. The mechanisms for radiation effect are...
Resource Type:: Masters Thesis
Full Text:: Albrecht Jander In the next decade, technology trends—smaller dimension, lower voltage, higher

Modeling spintronics devices in Verilog-A for use with industry-standard simulation tools

Creator:: Engelbrecht, Linda M.
Abstract:: As the semiconductor industry works to integrate increasingly more "non-CMOS" devices onto CMOS ICs, compact model development has become an important step in the circuit/system verification tool flow. This research focuses on the two- and three-dimensional modeling of the physical phenomena that occur in nanoscale magnetic devices. This includes the...
Resource Type:: Dissertation
Full Text:: -Standard Simulation Tools Abstract approved: Albrecht Jander As the semiconductor industry works to

Electrical characterization of thermally reduced graphite oxide

Creator:: Jewell, Ira
Abstract:: This thesis describes the transport properties observed in thermally treated graphite oxide (GO), which holds promise as an economical route to obtaining graphene. Graphene is a material consisting of a single atomic plane of carbon atoms and was first isolated as recently as 2004. Several isolation techniques have been investigated,...
Resource Type:: Masters Thesis
Full Text:: : ______________________________________________________ Albrecht Jander Pallavi Dhagat This thesis describes the

Measuring the inverse magnetostrictive effect in a thin film using a modified vibrating sample magnetometer

Creator:: Buford, Benjamin, Dhagat, Pallavi, and Jander, Albrecht
Abstract:: A method for measuring the magnetostriction of thin films using a vibrating sample magnetometer is described. We describe the design of a custom sample holder to apply an adjustable bending stress to the sample during measurement and observe the resulting change in the M-H loop.
Resource Type:: Article
Full Text:: a thin film using a modified vibrating sample magnetometer Buford, B., Dhagat, P., & Jander, A

A technique for error estimation of linewidth and damping parameters extracted from ferromagnetic resonance measurements

Creator:: Buford, Benjamin, Dhagat, Pallavi, and Jander, Albrecht
Abstract:: Ferromagnetic resonance (FMR) characterization, using a vector network analyzer (VNA), is widely used to determine anisotropy, g-factor, and Gilbert damping parameter of magnetic thin films, but results are typically reported without calculation of the measurement accuracy. We present a method of processing VNA-FMR measurements to determine both the value and...
Resource Type:: Article
Full Text:: ., Dhagat, P., & Jander, A. (2015). A technique for error estimation of linewidth and damping parameters

Writing magnetic patterns with surface acoustic waves

Creator:: Li, Weiyang, Buford, Benjamin, Jander, Albrecht, and Dhagat, Pallavi
Abstract:: A novel patterning technique that creates magnetization patterns in a continuous magnetostrictive film with surface acoustic waves is demonstrated. Patterns of 10 μm wide stripes of alternating magnetization and a 3 μm dot of reversed magnetization are written using standing and focusing acoustic waves, respectively. The magnetization pattern is size-tunable,...
Resource Type:: Article
Full Text:: surface acoustic waves Weiyang Li, Benjamin Buford, Albrecht Jander, and Pallavi Dhagata) School of

Theoretical study of alignment dynamics of magnetic oblate spheroids in rotating magnetic fields

Creator:: Tan, Mingyang, Song, Han, Dhagat, Pallavi, Jander, Albrecht, and Walker, Travis W.
Abstract:: Magnetic composites containing anisotropic magnetic particles can achieve properties not possible in corresponding bulk or thin films of the magnetic material. In this work, we discuss how planar magnetic anisotropy may be achieved in a composite by aligning disk-shaped particles in an in-plane rotating magnetic field. Previous efforts have reported...
Resource Type:: Article
Full Text:: ,1 Han Song,2 Pallavi Dhagat,2 Albrecht Jander,2 and Travis W. Walker1,a) 1CBEE, Oregon State

Effect of packing fraction on ferromagnetic resonance in NiFe2O4 nanocomposites

Creator:: Song, Han, Mulley, Sam, Coussens, Nathan, Dhagat, Pallavi, Jander, Albrecht, and Yokochi, Alexandre
Abstract:: Magnetic nanocomposites, composed of magnetic nanoparticles in an insulating matrix, can have properties not achievable in bulk, single-phase materials. This work reports on ferromagnetic resonance (FMR) measurements as a tool to investigate the internal magnetic field in nanocomposite samples of varying particle packing fractions. The ferromagnetic resonance frequency changes with...
Resource Type:: Article
Full Text:: nanocomposites Han Song, Sam Mulley, Nathan Coussens, Pallavi Dhagat,a) Albrecht Jander, and Alexandre Yokochi

ScholarsArchive@OSU

Modeling, Fabrication, and Characterization of Magnetic Thin Films for Integrated Inductor and MRAM Applications

Soft Magnetic Composites for High Frequency Applications

Radiation tolerance of magnetic tunnel junctions with MgO barriers

Modeling spintronics devices in Verilog-A for use with industry-standard simulation tools

Electrical characterization of thermally reduced graphite oxide

Measuring the inverse magnetostrictive effect in a thin film using a modified vibrating sample magnetometer

A technique for error estimation of linewidth and damping parameters extracted from ferromagnetic resonance measurements

Writing magnetic patterns with surface acoustic waves

Theoretical study of alignment dynamics of magnetic oblate spheroids in rotating magnetic fields

Effect of packing fraction on ferromagnetic resonance in NiFe2O4 nanocomposites

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