We apply the first-order reversal curve (FORC) method, borrowed from studies of ferromagnetic materials, to the magneto-structural phase transition of Fe1+yTe. FORC measurements reveal two features in the hysteretic phase transition, even in samples where traditional temperature measurements display only a single transition. For Fe1.13Te, the influence of magnetic field suggests that the main f...

Authigenic ferrimagnetic iron sulfides, essentially greigite (Fe 3 S 4 ), are commonly found in gas hydrate-bearing marine sediments of active accretionary prisms. Greigite is a by-product, either intracellular or extracellular, microbial activity, and therefore provides good indication processes which closely related to the occurrence hydrate. A high-resolution rock magnetic study was conducte...

The generic problem of extracting information on intrinsic particle properties from the whole class of interacting magnetic fine particle systems is a long standing and difficult inverse problem. As an example, the Switching Field Distribution (SFD) is an important quantity in the characterization of magnetic systems, and its determination in many technological applications, such as recording m...

BACKGROUND AND PURPOSE Adequate restoration of femoral offset (FO) is critical for successful outcome after hip arthroplasty or fixation of hip fracture. Previous studies have identified that hip rotation influences the projected femoral offset (FOP) on plain anteroposterior (AP) radiographs, but the precise effect of rotation is unknown. PATIENTS AND METHODS We developed a novel method of as...

A scanning probe microscopy technique for probing local ionic dynamics in electrochemically active materials based on the first-order reversal curve current-voltage (FORC-IV) method is presented. FORC-IV imaging mode is applied to a Ca-substituted bismuth ferrite (Ca-BFO) system to separate the electronic and ionic phenomena in this material and visualize the spatial variability of these behavi...

Thermomagnetic curves of magnetic susceptibility (κ) are key to characterizing properties. We report hump-shaped κ-T magnetite-bearing basalt during heating-cooling cycles ∼340°C, with a large thermal hysteresis and similar starting ending values, even in multiple repeated cycles, ruling out changes mineralogy. Based on FORC diagrams published results engineered materials, we propose that arise...

We develop a Hermite interpolation scheme and prove error bounds forC bivariate piecewise polynomial spaces of Argyris type vanishing on the boundary of curved domains enclosed by piecewise conics.