Magnetic, magnetoresistance, and magnetodielectric properties of oxygen deficient charge ordered manganite, Pr0.5Ca0.5MnO3−δ

► Magnetic, magnetoresistive and magnetodielectric properties are investigated. ► The low-temperature properties are strongly influenced by oxygen off-stoichiometry. ► A disorder driven phase separation is noticed in low temperature state. ► Fairly large magnetodielectric response (close to room temperature) is observed. ► Considerable magnetodielectric response is not a consequence of magnetoresistance.