The Tradition of Innovation in Islamic Civilization: An Exclusive Study of Early Ages of Islam

اسلامی تہذیب میں تازہ کاری کی روایت: قرون اولی کا اختصاصی مطالعہ Islamic civilization was founded by the Holy Prophet (May blessings of Allah and peace be upon him) right from the beginning of Islam. Each civilization and every culture are deeply affected by the concurrent cultures and civilizations and it used to adopt and borrow many things from other civilizations. Similarly, Islamic civilization and culture borrowed many aspects from other prevailing civilizations. With the passing day, these intercultural relations and exchanges became the part and parcel of the Islamic civilization. Such communications, and they have marked all epochs in Islamic history, occur in greatly diverse ways. The Holy Prophet also approved some traditions in this regard and the four Caliphs adopted many customs too. This reflects the adoption and concluding from other civilizations is not prohibited in every case, but this adoption must not be against Islamic teachings. Now a days, the entire world has become a worldwide town because of internet and technological developments. It is relatively obvious that Muslims are adopting many things from western civilization and culture without knowing its legitimacy or illegitimacy. Resultantly, these activities apparently become the chunk of Islamic civilization. This investigation seeks guidance from golden period of Islam i.e. Early centuries of Islam and describes its validity or voidness. In this article, these experiences of Islamic civilization and culture in adopting and concluding from other civilizations and cultures have been conferred and their principles and opinion of the prominent scholars, in this context, been talked about in the light of Islamic teachings. This study will promulgate awareness about the tradition of innovation in Islamic civilization and will provide guidance to the new researchers about this topic.  

Structural, Electronic and Magnetic Properties of Spinel Based Transition Metal Oxides

Theoretical study of Spinel based Transition Metal Oxides is reported. The Density Functional Theory approach is adopted for computational investigation using LAPW code. The structural, elastic properties of (XAl2O4 for X=Mg, Mn, Fe, Co, Ni, Cu, Zn), (MGa2O4 for M=Mg, Mn, Fe, Co, Ni, Cu, Zn, Cd), (NIn2O4 for N=Mg, Zn, In) & (ZnP2O4 for P=V, Cr, Fe, Rh, Sn) along with electronic & magnetic properties of cubic spinel oxides (XAl2O4) and (MGa2O4) have calculated. The calculated structural parameters conform to other experimental and theoretical evidences. Fulfillment of elastic stability criteria proves the reliability of the reported data. The calculated elastic constants show that all materials abide its stability opposing elastic deformations and the Cauchy’s pressure confirms the dynamical stability of these materials. The high values of bulk moduli show the hardness of these materials while the Young moduli data reveal that MgAl2O4 is the stiffer material among all. Further, Poisson’s ratios testify the compressibility, connote stableness to external deformation of these materials and reveal dominance of central forces being the interatomic forces. Out of 24 materials, only 05 are brittle and the rest are ductile with elastic anisotropy. MgAl2O4 is the most brittle and CdGa2O4 is the most ductile material. The electronic structure (Total DOS) show all XAl2O4, MGa2O4 (M=Fe, Co, Zn, Cd) have antiferromagnetic, NiGa2O4 & CuGa2O4 have FM state and the valence near Fermi level due to the transition metal 3d state. The calculation of direct exchange energy Δx(d) shows that the exchange mechanism of electrons is dominant in introducing magnetism and enormous exchange splitting is observed in these materials. The ferromagnetism in the group MGa2O4 of spinel oxide compounds is due to hybridization between the electrons in the 3d-states cation and 2p states anion. Appearance of magnetic moments in these materials is due to unpaired electrons in 3d states of Transition metal ions. The negative value of indirect exchange energy confirms the magnetism by spin of electrons.