Metadata Schemas

AtomCloud schema definitions and relationships.

Project

Attributes

Name: a project name entered by the user

Contains

Physical Samples: instances of Physical Sample associated with the project.

Physical Sample

Attributes

Name: a physical sample name entered by the user

Notes: freeform text containing annotations and procedure details

Target Material: an instance of Target Material

Growth Instrument: an instance of Growth Instrument

Contains

Data Items: instances in the data catalogue corresponding to file artifacts.

Target Material

Attributes

Name: a name for the target material entered by the user

Substrate: generic string name for the substrate of the target material

Contains

Layers: ordered list of layers, beginning at the substrate and working up.

Layer

Attributes

Chemical Formula: stoichiometric string specifying the composition of the layer.

Space Group: 3D space group for the target lattice structure.

Orientation: miller indices normal to the film surface.

Materials Project ID: identifier for the structure in the materials project

Cross-section view of the Target Material model.

Growth Instrument

Attributes

Instrument Label: user-defined display name for the instrument

Instrument Name: name of the instrument make and model

Instrument Type: growth technique corresponding to this instrument

Serial Identifier: serial number of the instrument

Tags

Attributes

Phase

Monophase, Multiphase, Heterostructure

Zone Axis

10, 01, 11, 12, 21, 22, 13, 31

Crystallinity

Single, Poly

Morphology

Islands, Steps, Layers