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

Nuclear quadrupole resonance (NQR) spectra of 17O, 39K, 85Rb, 87Rb and 133Cs have been measured in the low-temperature phases of KHSO4, RbHSO4, NH4HSO4 and TlHSO4 with the nuclear quadrupole double resonance technique based on magnetic field cycling. The NQR results are related to the crystal structures of the low-temperature phases of these compounds.

Nuclear quadrupole double resonance in AHSO4 (A identical to K, Rb, Cs, Tl, NH4)

Linear and nonlinear light scattering near the phase transition in KH2PO4.

The effect of thermal fluctuations and discreteness of the crystal lattice on the pinning of the modulation wave and the phason gap of structurally incommensurate systems is examined. Very close to the paraelectric-to-incommensurate transition temperature ${\mathit{T}}_{\mathit{I}}$, the phason gap is vanishingly small, but at slightly lower temperatures it takes on a nonzero value. Near the lower incommensurate-to-commensurate transition temperature ${\mathit{T}}_{\mathit{C}}$, where floating effects are negligible, the pinning may lead to a ``devil's staircase''-like temperature dependence of the phason gap.

Discrete lattice effects and the phason gap of incommensurate systems.

Second order quadrupole shifts of the Na23 magnetic resonance in Rochelle salt

Following our previous communication1 about the glass state in Rb0.69(NH4)0.31H2AsO4 system a dielectric study at X-band of the mixed crystals of Rb1-x(NH4)xH2AsO4 was made in a wide concentration range x. Both e′ . and e″ were studied between 5 and 300 K. From dielectric measurements the phase diagram was determined. In the RADA system a proton glass state exists in the concentration range 0.1 < x < 0.5.

Robert Blinc

Papers

Nuclear quadrupole double resonance in AHSO4 (A identical to K, Rb, Cs, Tl, NH4)

Linear and nonlinear light scattering near the phase transition in KH2PO4.

Discrete lattice effects and the phason gap of incommensurate systems.

Second order quadrupole shifts of the Na23 magnetic resonance in Rochelle salt

Proton glass state in Rb1-x(NH4) xH2AsO4