Materials Characterization

Independent technical guides to XRD, SEM/EDS, UV–Vis DRS, XPS and thermal analysis.

Materials Characterization

Materials characterization connects processing history and composition to crystal structure, microstructure, surface chemistry, optical response and thermal behaviour. Each technique has its own measurement physics, instrument architecture, practical workflow and interpretation limits.

How to use this division: Start with the question you need to answer. No single characterization method establishes phase purity, composition, microstructure and functional performance simultaneously. Select complementary techniques and preserve the raw data and acquisition conditions.

Instrument guides

01.01 · CRYSTAL STRUCTURE

X-ray Diffraction (XRD)

Generation of X-rays, Bragg diffraction, diffractometer geometry, detectors, phase identification, peak broadening, lattice parameters and Rietveld refinement.

Open the XRD guide →

01.02 · MORPHOLOGY & ELEMENTS

Scanning Electron Microscopy (SEM/EDS)

Electron optics, electron–matter interactions, secondary and backscattered electrons, imaging and X-ray microanalysis.

Open the SEM/EDS guide →

01.03 · OPTICAL RESPONSE

UV–Vis Diffuse Reflectance (DRS)

Absorption, scattering, integrating spheres, reflectance standards, Kubelka–Munk transformation and Tauc analysis.

Open the UV–Vis DRS guide →

01.04 · SURFACE CHEMISTRY

X-ray Photoelectron Spectroscopy (XPS)

Photoelectric effect, electron energy analysis, binding energy, chemical states, charging and surface quantification.

Open the XPS guide →

01.05 · THERMAL RESPONSE

TGA, DSC and DTA

Mass change, heat flow, thermal events, calibration, baselines and kinetic interpretation.

Open the thermal analysis guide →

Choosing complementary methods

Research question	Useful primary method	Important limitation
Which crystalline phases are present?	XRD	Amorphous content and minor phases may be difficult to quantify
What does the surface morphology look like?	SEM	Image contrast depends on detector and acquisition conditions
Which elements are present locally?	EDS	Interaction volume and peak overlaps limit spatial and chemical specificity
What is the optical absorption response?	UV–Vis DRS	Scattering and sample packing affect the transformed spectrum
Which chemical states occur near the surface?	XPS	Surface-sensitive; charging and fitting assumptions matter
At what temperature does mass or heat flow change?	TGA / DSC / DTA	Events depend on atmosphere, heating rate and sample configuration

Guide status is explicit: only linked guides are available. Planned topics are not represented as completed content.