Hae

This dissertation investigates the phenomenon of resistive switching (RS) in lowbandwidth mixed-valence perovskite manganite oxides. In particular, the compounds Pr0.6Ca0.4MnO3 and Gd1−xCaxMnO3 with x between 0 and 1 are ...

Solar energetic particles (SEPs) are an important component of space weather. They pose a serious radiation hazard to electronic equipment and biological organisms in space. They are produced in explosive events such as ...

Two decades ago, the first experiments with a novel optical microphone using a small silicon cantilever as its sensing element were conducted at the University of Turku. In retrospect, those experiments revealed the potential ...

High temperature YBa2Cu3Oz_6+xsuperconducting films are deposited on top of differently fashioned buffered metals to enhance the critical current density and its isotropy for coated conductor applications. The ...

This doctoral dissertation aims to enhance the critical current density (Jc) of high-temperature superconductors (HTS) based on YBa2Cu3O7−δ (YBCO) to maximize their potential. Achieving high Jc in superconductors involves ...

The versatility in properties of porous silicon (PSi) has enabled a broad spectrum of applications, ranging from microelectronics and various types of sensors to its use as a biocompatible material in drug delivery. Structural ...

This doctoral thesis presents the design, simulation, and calibration of two instruments developed to study energetic charged particles in low-Earth orbit. The near-Earth energetic charged particle populations include ...

Computational materials physics is a field where we try to understand the phenomena related to materials all around us. However we can only model a small sections portion of these materials in our computations, quantum ...

This dissertation studies the implications of vortex dynamics in high-temperature superconducting thin films. The combined use of both experimental and computational methods enabled one to draw otherwise unobtainable ...

This thesis presents experimental studies of two fundamental components of electronic devices: an oxide- and metal-semiconductor interface. The importance of these interfaces increases continuously when a device size is ...