A mild one-step solvothermal route to truncated octahedral magnetite crystals

- Truncated octahedral magnetite was synthesized through mild solvothermal method.
- 160 °C is optimum for the formation of truncated octahedra.
- An appropriate amount of NaOH is helpful at mild temperature.
- The as-prepared magnetite is ferromagnetic with an Ms value of 83 emu/g at room temperature.