Introduction to Lanthanum Strontium Manganate
Lanthanum strontium manganate (LSMO), typically La₁₋ₓSrₓMnO₃, is a mixed-valence perovskite in which Sr²⁺ substitution for La³⁺ creates Mn³⁺/Mn⁴⁺ states that drive double-exchange ferromagnetism. At x ≈ 0.3, LSMO exhibits metallic conductivity, a Curie temperature above room temperature, colossal magnetoresistance, and strong spin polarisation, making it attractive for spintronic applications. RF or pulsed-DC magnetron sputtering from dense ceramic targets enables precise Sr doping, oxygen stoichiometry, and uniform film thickness. Sputtered LSMO films are widely used as spin-polarised electrodes in magnetic tunnel junctions, oxide spin valves, ferroelectric heterostructures, and as conductive layers or cathodes in solid-oxide electrochemical devices requiring controlled magnetic and electronic properties.
Types & Grades of Lanthanum Strontium Manganate
Lanthanum Strontium Manganate targets are offered in standard catalogue sizes and grades, with custom purity, density, and geometry available for OEM and R&D deposition systems.
| Grade / Form | Typical Purity | Key Features / Uses |
|---|
| Standard planar disc target | 99.9% (3N) | General-purpose RF and pulsed-DC sputtering for spintronic electrode layers and SOFC cathode films |
| High-purity target | 99.95% – 99.99% | Preferred for epitaxial oxide heterostructure research where trace impurities can suppress spin polarisation |
| Custom Sr-doping level (x = 0.2 – 0.5) | 99.9% and above | Tailored strontium content to shift Curie temperature and resistivity for a specific device design |
| Bonded target (indium or elastomer) | 99.9% – 99.95% | Configured for high-power magnetron systems requiring enhanced thermal contact with the backing plate |
| Research-grade fine-grain target | 99.95% and above | Fine, controlled grain structure reduces particulate defects for low-noise epitaxial thin-film growth. |
Applications of Lanthanum Strontium Manganate
Sputtered films of Lanthanum Strontium Manganate support demanding roles across research and production applications where this material’s specific structural, electronic, or optical properties are the key requirement.
| Industry | Application | Function |
|---|
| Spintronics | Spin-polarised electrode layers in magnetic tunnel junctions and oxide spin valves | Supplies near-100% spin-polarised carriers for efficient spin injection and magnetoresistive signal generation |
| Correlated-oxide electronics research | Epitaxial LSMO layers in perovskite oxide heterostructures | Serves as a conductive, ferromagnetic buffer or electrode compatible with other functional perovskite films |
| Energy and fuel cells | Cathode layers in solid oxide fuel cells (SOFCs) | Catalyses the oxygen reduction reaction while providing high electronic and mixed ionic-electronic conductivity |
| Sensors | Magnetoresistive field sensors and magnetic memory elements | Converts applied magnetic field changes into measurable resistance shifts via the colossal magnetoresistance effect |
| Multiferroic and ferroelectric research | Bottom electrode layers beneath ferroelectric tunnel junctions | Provides a conductive, epitaxially compatible base layer for growth of overlying functional oxide films |
| Photonics and optoelectronic oxide research | Functional layers in oxide-based photodetector and optomagnetic device stacks | Contributes tunable magneto-optical response for experimental device architectures |
Take the Next Step
Infinita Materials fabricates Lanthanum Strontium Manganate sputtering targets engineered to the purity, density, and geometry your deposition process requires. Whether the requirement is a standard catalogue target or a custom size, purity, or bonded assembly, our team can help match the right specification to your deposition system. Request a quote or speak with our technical team to discuss your target specification.
