CaMoO4

Powellite · Calcium molybdate

CaMoO4 is a stable, insulating calcium molybdate mineral widely studied for its optical and dielectric properties.

CaMoO
Crystal structure of CaMoO4
Ground-state structure · Materials Project
Overview

About Powellite

CaMoO4 is a naturally occurring mineral known as powellite, characterized by its robust thermodynamic stability as a member of the molybdate family. It functions as a wide-gap insulator, making it a subject of significant interest for researchers exploring dielectric materials and solid-state chemistry.

Because of its structural integrity and insulating nature, this compound is frequently investigated for its potential in advanced optical devices and scintillation technology. Its well-documented structural diversity across multiple databases underscores its importance as a reliable material for fundamental materials science studies.

At a glance

Key Properties

Cross-validated computational properties for Powellite, aggregated across 3 databases.

Band Gap

0.89–3.50 eV
Range across DFT structures

Energy Above Hull

0.000 eV/atom
Best (lowest) across sources

Stability

On hull (stable)
2 DFT sources

Structures

17
3 databases, 2 space groups
Synthesis

Synthesis Routes

Literature-extracted synthesis procedures targeting CaMoO4.

Sol Gel
Procedure available · ceder_sol_gel
Sol Gel
Procedure available · ceder_sol_gel
Sol Gel
Procedure available · ceder_sol_gel
Sol Gel
Procedure available · ceder_sol_gel
Solid State
Procedure available · ceder_solid_state
Solid State
Procedure available · ceder_solid_state
Uses

Applications

Where Powellite is used.

Scintillation detectorsOptical materialsCatalysisPhosphor host materials
Intellectual Property

Patent Landscape

1 patent reference CaMoO4 or close compositional variants.

PatentTitleAssigneeGranted
4278644Process for partitioning Mo and W from a mixed CaMoO.sub.4 -CaWO.sub.4 precipitate——
Reference

Frequently Asked Questions

Common questions about Powellite, answered from cross-validated data.

What is CaMoO4?

CaMoO4 is a stable, insulating calcium molybdate mineral widely studied for its optical and dielectric properties.

More questions
What is CaMoO4 used for?
Powellite (CaMoO4) is used in scintillation detectors, optical materials, catalysis, and phosphor host materials.
What is the band gap of CaMoO4?
Powellite (CaMoO4) has a DFT-computed band gap of 0.89–3.50 eV across 17 reported structures.
Is CaMoO4 a metal, semiconductor, or insulator?
With a wide band gap up to 3.50 eV it is an insulator / wide-band-gap material.
Is CaMoO4 thermodynamically stable?
Yes — Powellite (CaMoO4) sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
How many polymorphs of CaMoO4 are known?
17 structures of CaMoO4 are reported across 3 databases, spanning 2 distinct space groups.
How is CaMoO4 synthesized?
Literature-reported routes for CaMoO4 include sol gel, solid state (10 procedures documented).
What elements does CaMoO4 contain?
Powellite (CaMoO4) contains Ca, Mo, and O (3 elements).
Where does the data for CaMoO4 come from?
CaMoO4 data is cross-referenced from latticegraph.
Comparison

How It Compares

As a thermodynamically stable oxide, CaMoO4 serves as a benchmark material within the molybdate class, representing a highly reliable and well-characterized structure that provides a foundational reference point for the study of related complex metal oxides.

Data sources & attribution
  • latticegraph — Lattice Graph Materials Intelligence Platform

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