Deposits of clastic carbonate-dominated (calciclastic) sedimentary slope systems in the rock record have been identified mostly as linearly-consistent carbonate apron deposits, even though most ancient clastic carbonate slope deposits fit the submarine fan systems better. Calciclastic submarine fans are consequently rarely described and are poorly understood. Subsequently, very little is known especially in mud-dominated calciclastic submarine fan systems. Presented in this study are a sedimentological core and petrographic characterisation of samples from eleven boreholes from the Lower Carboniferous of Bowland Basin (Northwest England) that reveals a >250 m thick calciturbidite complex deposited in a calciclastic submarine fan setting. Seven facies are recognised from core and thin section characterisation and are grouped into three carbonate turbidite sequences. They include: 1) Calciturbidites, comprising mostly of highto low-density, wavy-laminated bioclast-rich facies; 2) low-density densite mudstones which are characterised by planar laminated and unlaminated muddominated facies; and 3) Calcidebrites which are muddy or hyper-concentrated debrisflow deposits occurring as poorly-sorted, chaotic, mud-supported floatstones. These

Phd by thesis

Diamond-like carbon (DLC) is a metastable form of amorphous carbon with significant sp3 bonding. DLC is a semiconductor with a high mechanical hardness, chemical inertness, and optical transparency. This review will describe the deposition methods, deposition mechanisms, characterisation methods, electronic structure, gap states, defects, doping, luminescence, field emission, mechanical properties and some applications of DLCs. The films have widespread applications as protective coatings in areas, such as magnetic storage disks, optical windows and micro-electromechanical devices (MEMs).

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Diamond-like amorphous carbon

BiFeO3 is perhaps the only material that is both magnetic and a strong ferroelectric at room temperature. As a result, it has had an impact on the field of multiferroics that is comparable to that of yttrium barium copper oxide (YBCO) on superconductors, with hundreds of publications devoted to it in the past few years. In this Review, we try to summarize both the basic physics and unresolved aspects of BiFeO3 (which are still being discovered with several new phase transitions reported in the past few months) and device applications, which center on spintronics and memory devices that can be addressed both electrically and magnetically.

Physics and Applications of Bismuth Ferrite

http://experimentationlab.berkeley.edu/sites/default/files/AFMImages/butt_AFM.pdf

Force measurements with the atomic force microscope: Technique, interpretation and applications

We report a non-Pb piezoelectric ceramic system Ba(Ti(0.8)Zr(0.2))O(3)-(Ba(0.7)Ca(0.3))TiO(3) which shows a surprisingly high piezoelectric coefficient of d(33) approximately 620 pC/N at optimal composition. Its phase diagram shows a morphotropic phase boundary (MPB) starting from a tricritical triple point of a cubic paraelectric phase (C), ferroelectric rhombohedral (R), and tetragonal (T) phases. The high piezoelectricity of the MPB compositions stems from the composition proximity of the MPB to the tricritical triple point, which leads to a nearly vanishing polarization anisotropy and thus facilitates polarization rotation between 001T and 111R states. We predict that the single-crystal form of the MPB composition of the present system may reach a giant d(33) = 1500-2000 pC/N. Our work may provide a new recipe for designing highly piezoelectric materials (both Pb-free and Pb-containing) by searching MPBs starting from a TCP.

Large Piezoelectric Effect in Pb-Free Ceramics

14N quadrupole coupling in thermochromic N-5-chlorosalicylideneaniline

An expression of a third order nonlinear susceptibility of the poly-dispersive system with the distributed relaxation times is derived for the relaxational system where the linear dielectric susceptibility formula of the Cole–Cole type applies. It has turned out that the parameter β, specifying the distribution of the relaxation times, appears as the amplitude of the higher order dielectric susceptibility.

Dispersion Relation of the Third Order Nonlinear Dielectric Susceptibility in Poly-dispersive System

Abstract The microscopic nature of the solidification of cement was studied via a measurement of the time dependence of the fraction of freely rotating spin probes by electron paramagnetic resonance with and without added retardants. The results seem to support the osmotic theory of cement hydration.

EPR Study of Hydration of Portland Cement

Recent experimental1 and theoretical2 work on mixed K(H1-x Dx)2 PO4 systems has offered new support for the coupled proton (deuteron) tunnelling-lattice polar optic mode model of KH2PO4 (KDP)-type ferroelectric.3 In a related theoretical study4, a new method based on the single-site coherent potential approximation (CPA) has been applied to a quantitative calculation of the low temperature Raman spectra of isotopically disordered KDP crystals. Although the formalism developed there is quite general, only the dynamics of the collective modes near q = 0, relevant to the Raman scattering has been explicitly investigated so far. The purpose of the present study is to extend these results to all wave vectors in the Brillouin zone in order to further test the consistency of the model and to estimate the effects of the shape of the proton-proton and proton-lattice couplings on the spectra of the collective modes. Furthermore, we hope that the results at q # 0 will stimulate the need for neutron scattering experi...

Collective modes of isotopically disordered KH2PO4-type ferroelectrics in the coherent potential approximation

Electron paramagnetic resonance spectra of the SeO 2 - centers in KD 3 (SeO 3 ) 2 demonstrate that the phase transition in this system is associated with an ordering of the O–H(2)–O hydrogens and a small rotation of the SeO 3 groups around the a -axis with the angle of rotation being proportional to the order parameter. The ferroelastic transition is thus triggered by a soft optic deuteron-lattice mode of B 3g symmetry inducing the acoustic C 44 instability.

Robert Blinc

Papers

14N quadrupole coupling in thermochromic N-5-chlorosalicylideneaniline

Dispersion Relation of the Third Order Nonlinear Dielectric Susceptibility in Poly-dispersive System

EPR Study of Hydration of Portland Cement

Collective modes of isotopically disordered KH2PO4-type ferroelectrics in the coherent potential approximation

EPR Study of the Ferroelastic Transition in KD3(SeO3)2