[1] SASTRA Deemed Univ, Ctr Energy Storage & Convers, Sch Elect & Elect Engn, Multifunct Mat & Devices Lab,Dept Phys, Thanjavur 613401, Tamil Nadu, India
[2] SIMATS Deemed Univ, Saveetha Sch Engn, Dept Elect & Commun Engn, Chennai 602105, Tamil Nadu, India
[3] Pondicherry Univ, Dept Phys, Pondicherry 605014, India
[4] UGC DAE Consortium Sci Res, Univ Campus,Khandwa Rd, Indore 452001, India