Single Crystal Growth of Pure Co3+ Oxidation State Material LaSrCoO4

• Main Authors: Hanjie Guo, Zhiwei Hu, Tun-Wen Pi, Liu Hao Tjeng, Alexander Christoph Komarek
• Format: Article
• Language: English
• Published: MDPI AG 2016-08-01
• Series: Crystals
• Subjects: floating zone method; single crystal growth; cobaltate
• Online Access: http://www.mdpi.com/2073-4352/6/8/98
• ISSN: 2073-4352

We report on the single crystal growth of the single-layer perovskite cobaltate LaSrCoO4 that was grown by the optical floating zone method using high oxygen pressures. Phase purity and single crystallinity were confirmed by X-ray diffraction techniques. The pure Co3+ oxidation state was confirmed by X-ray absorbtion spectroscopy measurements. A transition to a spin glass state is observed at ∼7 K in magnetic susceptibility and specific heat measurements.