Room temperature weak ferromagnetism and magnetoconductance in functional CuO film

► Properties of sol-gel derived CuO films are strongly influenced by the substrates, on which films are deposited. ► The ferromagnetic and semiconducting properties are clearly demonstrated at room temperature. ► A large magnetoconductance is observed at room temperature. ► Large magnetoconductance and convincing ferromagnetism in granular CuO film are promising for spintronic applications. ►