Condensed Matter & Materials Physics
7 terms
Magnetic Domains
Condensed Matter & Materials Physics
μm to mm (Domain Size)
Microscopic regions within a ferromagnetic material where atomic magnetic moments are aligned parallel in a uniform direction.
Domain Wall Energy E_total = E_exchange + E_anisotropy
Majority & Minority Carriers
Condensed Matter & Materials Physics
cm⁻³ (Carrier Density)
The classification of charge carriers in a doped semiconductor based on their relative concentrations.
N-Type: n_majority = N_D, p_minority = n_i² / N_D
Malleability
Condensed Matter & Materials Physics
Qualitative / Quantitative Plastic Strain
A material's physical ability to deform plastically under compressive stress without cracking, typically tested by hammering or rolling into thin sheets.
Compressive strain tolerance without cracking
Martensitic Transformation
Condensed Matter & Materials Physics
Transformation Temperature M_s
A rapid, diffusionless solid-state phase transformation driven by collective lattice shear displacement of atoms.
Diffusionless shear transformation: Austenite (FCC) → Martensite (BCT)
Meissner Effect
Condensed Matter & Materials Physics
T (Magnetic Flux Density B)
The active expulsion of magnetic flux from the interior of a superconductor as it cools below its critical temperature T_c.
B_internal = 0, M = -H (Perfect Diamagnetism)
Metamaterials
Condensed Matter & Materials Physics
Dimensionless Index n < 0
Artificially engineered composite structures designed with subwavelength resonant features that display electromagnetic properties not found in natural materials.
n_refractive = - √(ε_r μ_r) (Negative Refractive Index)
Miller Indices
Condensed Matter & Materials Physics
Dimensionless Notation System
A standardized three-integer crystallographic notation system (h k l) used to specify direction vectors and orientation of planes in a crystal lattice.
(h k l) = Reciprocals of lattice axis intercepts