دل کی بات نہیں سنتا ہے
میں نے کہا اجازت ہو تو
دل کی بات کہوں اک تم سے
اُس نے کہا نہیں رہنے دو
With the start of the codification of Muslim Personal Law in the Muslim countries, the question of exclusion and deprivation of orphan grand-children of the deceased from heir ship has gained importance. Bringing of section 4 on statute book was the result of the recommendations of the Commission on Marriage and Family Laws 1956. It was based on so-called ijtihād which caused confusion in the Islamic law of inheritance. Hence by declaring the section 4 repugnant to the injunctions of Islam, the Federal Shariʻat Court observed that the concept of “compulsory will” is an appropriate alternate to this problem. The court explains that making a will in favor of orphan grandchildren out of an estate of grandparents to the extent of one third would be very plausible solution to meet the socio- economic problem. The article aims to elaborate the concept of making of a will specially wasiyat wajiba in favor of orphan grandchildren. Various juristic opinions, rulings and legislation of Muslim countries have been analyzed in this regard. Majority of jurists are of the opinion that the making of will in the said case is only recommended and not mandatory. However according to some jurists it is mandatory. In this condition the legislative body may take steps to amend the law so as to bring the said provision in conformity with the injunctions of Islam.
Multiferroics, displaying more than one ferroic characteristics in the same phase, constitute an energetic group of materials with rich fundamental Physics and many promising applications in modern technologies. Polycrystalline fine powders of Bi0.9Sr0.1FeO3 (residue-BSFO), Bi0.9Sr0.1Fe1-xMnxO3 (BSFMO) (with x = 0, 0.05, 0.1, 0.15 and 0.2) and Bi0.9La0.1Fe1-xCrxO3 (BLFCO) (with x = 0, 0.05, 0.1, 0.15 and 0.2) are synthesized successfully at relatively low temperature by sol-gel auto combustion, using both glycine and urea as chelating agents. BSFMO samples were sintered at 550 ℃ for 3 h while BLFCO samples at 600 ℃ for 2 h. The structural, morphological, dielectric, electrical, magnetic and ferroelectric properties of the synthesized samples were explored using the corresponding characterization techniques. Rietveld''s refined XRD patterns of all the prepared samples have confirmed that phase pure BFO ceramics were synthesized which exhibited distorted perovskite crystal structure (ABO3 type) having space group R3c (161). Co-doping of Sr/Mn & La/Cr at Bi/Fe sites respectively in BFO have not altered the crystal symmetry of the parent compound. FESEM images showed homogeneous microstructures with uniformly distributed and well interlinked multi-shaped grains with varying sizes, intergranular porosity and few cracks as well as a decreasing trend in grain sizes with increasing doping contents. The crystallite sizes calculated by Scherrer''s formula are in the range of 9.2-15.0 nm for BSFMO and 5.8-13.7 nm for BLFCO samples. The average grain sizes shown by SEM images are in the range of 50-80 nm for BSFMO and 8-20 nm for BLFCO samples. EDX results have confirmed that all the parent and the doped elements (Bi, Fe, O, Sr, Mn, La, and Cr) are present in the synthesized samples according to their stoichiometric ratios. The dielectric behavior of all the samples have exhibited the conventional ferrite trend depicting larger values at lower frequencies which then exhibited decreasing trend with increasing frequency and finally became constant at higher frequencies. Complex impedance spectroscopy revealed the contribution of grains, grain boundaries and interfaces. The frequency dependent Nyquist and electric modulus graphs confirmed the non-Debye type relaxation. The formation of bonds between different atoms within the BSFMO compositions are identified through FTIR. Both magnetization and polarization have been observed in all the synthesized samples which have confirmed that the synthesized BFO based nanoparticles possess more than one ferroic order in the same v phase, and at the same time i.e. the samples exhibit multiferroicity. In the present work, the characteristics shown by the samples have been explained on the basis of dopant elements, their doping percentage, purity of phases, grain sizes and their microstructures. In summary, the sol-gel auto-combustion technique is suitable to synthesize phase pure BFO ceramics if the stoichiometric ratios of raw materials and the reaction parameters are controlled. The synthesized samples for the present research work are more pure, better and cost effective as compared to those which were found in literature. Almost all the prepared samples are impurity free so, the contribution of parasitic phases in improving multifunctional properties of the synthesized samples is negligible. Co-doping of Sr/Mn in Bi0.9Sr0.1Fe1-xMnxO3 and La/Cr in Bi0.9La0.1Fe1-xCrxO3 compositions have yielded improved and viable multiferroic features which would be beneficial to fabricate multifunctional devices for future technology in order to fulfill the needs of coming generations.