Van der Waals Ferroelectrics - Properties and Device Applications of Phosphorous Chalcogenides

The book provides in-depth insights, both from an experimental and a computational perspective, into the multiferroic properties of phosphorous chalcogenides and their applications.

Inhaltsverzeichnis:

CRYSTAL STRUCTURE AND PHASE TRANSITIONS IN LAYERED CRYSTALS OF TERNARY PHOSPHOROUS CHALCOGENIDES
Ferrielectric, Antiferroelectric and Modulated Orderings in MM'P2X6 (M-Cu, Ag; M'-In, Bi; X'S, Se)
Relaxor and Dipole Glassy States on the Phase Diagram of CuInP2(SexS1-6)6 Mixed Crystals
Antiferromagnetic Ordering and Anisotropy of Magnetization in Multiferroics Cu(In1-xCrx)P2S6
Magnetic Ordering in Mn2P2S6 Crystal
Polar Layered Crystals of SnP2S6 Type

ELECTRONIC BAND STRUCTURE
Chemical Bonding in P2S(Se)6 Structural Groups
Hybridization of Electronic Valence Orbitals and Structural Stability of MM'P2S(Se)6 Type Compounds
Second-Order Jahn-Teller Effect and Dipole Ordering in Cu(Ag)InP2S(Se)6 Crystals with d10 Cu+ and Ag+ Cations
Second-Order Jahn-Teller Effect and Phase Transitions in Cu(Ag)BiP2S(Se)6 Crystals with Stereoactive Electronic Lone Pair of Bi3+

OPTICAL PROPERTIES OF MM'P2S(SE)6 CRYSTALS
DFT Calculated Electronic Band Structur es and Optical Parameters
Temperature Dependence of the Optical Absorption for Mn2P2S6, AgInP2S6, CuInP2S(Se)6, CuCrP2S6, SnP2S6 Layered Crystals
Appearance of Dipole Glassy State in Edge Optical Absorption of CuInP2(SexS1-x)6 Mixed Crystals

PHONON SPECTRA OF LAYERED MM'P2S(SE)6 CRYSTALS
DFT Calculated Phonon Spectra in Different Phases
Raman Spectroscopy of CuInP2S6 Crystal Across Ferrielectric Phase Transition
Phonon Spectra of CuInP2(SexS1-x)6 Mixed Crystals
Anisotropy of Thermal Conductivity Temperature Dependence in Cu(Ag)In(Bi)P2S(Se)6 Layered Crystals
Heat Capacity Anomalies at Dipole and Magnetic Ordering in CuInP2S(Se)6 and CuCrP2S6 Crystals
Spin-Phonon Coupling in Mn2P2S6 Crystals

SEMICONDUCTOR TO METAL TRANSITIONS IN SNP2S6 AND SN2P2S6 TYPE COMPOUNDS.
Layered GeP2S6, GeP2Se6, GeP2Te6, SnP2S6, SnP2Se6, SnP2Te6 Polar Crystals with Pressure- or Chemical Composition-Induced Semiconductor-Metal Transition
Pressure-Induced Metal S tate in Sn2P2S6 and Sn2P2Se6 Compounds
DFT Calculated Transformation of Electron and Phonon Spectra at Transition into Polar Metal State

DIELECTRIC AND FERROELECTRIC PROPERTIES OF LAYERED PHOSPHORUS CHALCOGENIDE CRYSTALS
Anisotropy Effects in Thick-Layered CuInP2S6 and CuInP2Se6 Crystals
Dipole Glass State in Cu(InxCr1-x)P2S6 Crystals
Non-Linear Dielectric Response of Layered (Ag,Cu)(In,Cr)P2S6 Crystals
Dielectric Spectroscopy of CuBiP2Se6 Crystals

IONIC CONDUCTIVITY AND LOW-FREQUENCY NOISE SPECTROSCOPIC STUDIES
Ionic Conductivity Investigations in CuInP2S6 and CuIn1+dP2S6 Crystals
Conductivity Spectroscopy of AgInP2(SexS1-x) and (CuxAg1-x)CrP2S6 Crystals
Low-Frequency Noise Spectroscopy of Layered CuInP2S6
Electrical Conductivity of Layered CuInP2(SxSe1-x)6 Crystals

ULTRASONIC AND PIEZOELECTRIC STUDIES OF PHASE TRANSITIONS IN TWO DIMENSIONAL CUINP2S6 TYPE CRYSTALS
Ultrasonic Investigation of Phase Transition in CuInP2S6 Crysta ls
Piezoelectric and Ultrasonic Studies of Mixed AgxCu1-xInP2(S,Se)6 Layered Crystals
Ultrasonic Spectroscopy of Quasi Two-Dimensional CuInP2(SexS1-x)6 Mixed Crystals.
Piezoelectric and Elastic Properties of Layered Materials of Cu(In,Cr)P2(S,Se)6 System

NANO SCALE INVESTIGATIONS, DOMAIN STRUCTURE AND SWITCHING PROCESSES OF LOW-DIMENSIONAL FERROELECTRIC LAYERED CHALCOGENIDES
Ferrielectric State in Few-Layer or Monolayer CuInP2S6 samples.
Bright Domain Walls in CuInP2Se6 Crystals
Antisite Defects in Layered Multiferroic CuCr0.9In0.1P2S6

PHENOMENOLOGICAL DESCRIPTION OF SOFT PHONON SPECTRA, PHASE DIAGRAMS AND DOMAIN MORPHOLOGY OF LOW-DIMENSIONAL FERROELECTRIC LAYERED CHALCOGENIDES
Brief Overview
Spatially-Modulated Incommensurate Phases and Soft Phonon Dispersion in Ferroelectric Layered Chalcogenides
Phase Diagrams with Incommensurate Phases and Domain Splitting in Thin Films of Ferroelectric Layered Chalcogenides