| CAS Number | 7440-60-0 |
| Material | Ho |
| Size | Customized |
| Density | 8.54 g/cm3 |
| Purity | 99.9% |
Stanford Advanced Materials (SAM) supplies high-purity Holmium (Ho) Planar Sputtering Targets for precision thin-film deposition. Fabricated with 99.9%–99.99% (3N–4N) purity holmium, each target is engineered with a fine-grained microstructure (<50 µm) and achieves over 95% of the theoretical density, ensuring stable sputtering, low particulate generation, and uniform thin-film formation.
Standard sizes range from 50–200 mm in diameter and 3–10 mm in thickness. Custom dimensions, shapes, and bonding configurations (e.g., Cu, Mo, Ti backing plates) are available to support thermal management in high-power sputtering systems. To prevent oxidation, targets are vacuum-sealed in argon-filled packaging with desiccants, maintaining surface integrity during storage and transit.
All targets undergo strict quality assurance, including ICP-MS impurity analysis, XRD crystallographic verification, and surface roughness measurements (<0.5 µm Ra), in compliance with ASTM F3091 and ISO 9001 standards. SAM also offers sputtering parameter support (e.g., RF power, gas pressure), fast production turnaround (3–4 weeks for standard orders), and global logistics for research labs and industrial facilities.
| Property | Value |
|---|---|
| Purity | 99.9%–99.99% |
| Theoretical Density | 8.54 g/cm³ |
| Melting Point | 1470°C |
| Shape | Rectangular or customized |
| Size | Fully customizable |
All data based on theoretical values. Contact us for detailed specs.
Magnetic & Spintronic Devices
Used in HoCo-based magnetic thin films and spintronic memory elements such as MRAM and MTJs.
Optical & Laser Systems
Ideal for Ho:YAG laser crystal coatings, applied in medical and military mid-infrared laser systems.
Nuclear Engineering
Utilized as neutron-absorbing coatings (Ho-165) for reactor shielding and control rods.
Quantum Materials & Emerging Tech
In superconducting films and magnetocaloric systems for quantum computing and advanced cooling.
Industrial Coatings
For aerospace and high-temperature tools requiring wear and oxidation resistance.
Small Parts: Packed in polypropylene (PP) boxes
Large/Custom Orders: Secured in wooden crates
All Targets: Vacuum-sealed in argon with desiccants for oxidation control
Packaging Options: Carton, Wooden Crate, or Custom
Process Overview:
Quality Testing Includes:
Chemical Analysis – GDMS or XRF for purity
Mechanical Testing – Tensile, yield, and elongation
Dimensional Inspection – Verifies thickness, width, flatness
Surface Inspection – Detects defects via visual & ultrasonic methods
Hardness Testing – Ensures uniform mechanical strength
Q1: Can I request Ho-165 enriched targets?
A1: Yes. SAM offers isotopically enriched Ho-165 (>95%) for nuclear applications. Contact us for regulatory guidance.
Q2: How do I prevent oxidation during use?
A2: Store in dry argon or nitrogen environments. Pre-sputter with low power to clean the surface before deposition.
Q3: What sputtering conditions are recommended?
A3: RF power: 100–300 W, Argon pressure: 2–5 mTorr, Substrate temp: 200–400°C depending on film requirements.
| Feature | Holmium Rotary Target | Holmium Planar Target |
|---|---|---|
| Material Utilization | 80–90% | 30–40% |
| Service Life | Longer | Shorter |
| Coating Uniformity | Higher, ideal for large areas | Moderate, may vary |
| Cost Efficiency | Higher initial, better yield | Lower cost, more frequent replacement |
| Applications | Large-area coatings (TFT, solar) | Small-area coatings (semiconductors) |
| Stability | More uniform erosion | Prone to uneven erosion |
| Equipment | Requires rotary system | Compatible with planar systems |
Atomic Number: 67
Atomic Weight: 164.93
Melting Point: 1,470°C
Density: 8.54 g/cm³
Properties: Silvery-white, ductile, highly magnetic, reactive in air
Holmium is among the most magnetic elements and is used in high-strength permanent magnets, neutron-absorbing nuclear materials, and mid-IR laser systems. It plays a growing role in optical coatings, superconducting devices, and magnetocaloric cooling technologies.
