مولانا عبدالصمد صاحب رحمانی
دوسرا حادثہ مولانا عبدالصمد صاحب رحمانی نائب امیر شریعت صوبہ بہار و اڑیسہ کا ہے وہ بھی پرانی یادگار، اس دور کے نامور عالم اور ملک و ملت کے پرانے خدمت گزار تھے، ملکی و ملی تحریکات میں ان کا نمایاں حصہ رہا، خلافت اور ترک موالات کی تحریک اور ہندوستان کی آزادی کی جدوجہد میں مولانا سجاد بہاری مرحوم کے رفیق کار تھے، ان کی وفات سے ایک قدیم یادگار اٹھ گئی، اﷲ تعالیٰ ان کے مدارج بلند فرمائے۔
(شاہ معین الدین ندوی،جون ۱۹۷۳ء)
One of the core issues in contemporary economic trends is the fair and just distribution of wealth into the society. In this research, a comparative study of ‘distribution of wealth’ in Capitalism, Communism and Islam has been conducted. Qualitative research method is adopted for the analysis of data. The review of literature reveals that central ideas of Capitalism, Communism and Islam are ‘liberty’, ‘equality’ and ‘justice’ respectively. After evaluating the basic infrastructure, methodological framework and practical consequences of these three systems, it has been established that Capitalism and Communism have badly failed in maintaining fair distribution of wealth. Both (Capitalism and Communism) enhanced global inequality which could be assessed from the present economic condition of world as half the world’s wealth is now in the hands of just 1% of the population. On the other hand, Islam has ensured the just distribution of wealth by taking two revolutionary steps: by giving 18 compulsory and 6 optional commandments about circulation of wealth and by overruling all means of hoarding. Moreover, unlike Capitalism and Communism, Islam has given special instructions to distribute wealth among poor, disable, and helpless persons of society who are incapable of participating in the process of production. These measures promote peace and prosperity in society and reduce the ratio of poverty. In the light of above findings, it is concluded that only Islamic economic system can guarantee the just and fair distribution of wealth. It is, therefore, recommended that Islamic countries should implement the Islamic economic system in order to get rid of economic instability.
Wide band gap semiconductors are the key components to make laser diodes and blue and green LEDS. They are being used in power switching and high temperature applications. The bandgap of ZnS is tuned by adding an impurity such as Mg that is useful for optoelectronic devices. Earlier reports indicate that there is slight blue shift in the band gap energy of Mg-doped ZnS but we have observed a reasonable red shift (3.48 eV to 2.58 eV) in ZnS band gap energy in Mg-doped ZnS structures. Theoretical model, based on first principle theory using local density approximation, has shown consistent results on Mg-doped ZnS structure. The present research work deals with as-grown and Mg-doped ZnS structures. A series of samples of ZnS with varying x content of Mg have been prepared with x= 0.0, 0.1, 0.2 and 0.3M by Sol-gel method using magnesium nitrate (Mg(NO3)2.6H2O), thiourea (SCN2H4) and zinc sulfate (ZnSO4.7H2O) for thesources of Mg2+, S2- and Zn2+ ions respectively. Ammonium hydroxide (NH3H2O) was used as a stabilizing agent and hydrazine hydrate (N2H4.H2O) was used as a complexing agent. The optical and structural properties were inspected as a function of Mg-concentration. The electrical, optical, morphological and structural properties were studied by different characterization techniques like XRD, SEM, FTIR, Hall measurements, EDX and UV-Vis Spectrometer. The cubic zinc blende crystal structure of ZnS:Mg was observed by the XRD. By SEM the crystallite size was found in micrometer (35nm for Mg=0.3). It has been concluded that with an increase of Mg-concentration in ZnS the crystallite size augments. The results of EDS show that the zinc and sulphur are major components in the composition of ZnS which confirms the purity of ZnS powder. In FTIR spectrum with range 500-4000cm-1, absorption peak was observed at 674cm-1 which confirms the ZnS synthesis. UV-Visible spectrophotometry results confirm the red shift in the bandgap energy of ZnS with Mg. The computational results performed by Quantum-ESPRESSO confirm the red shift band gap trend so as to support the experimentally determined results, only subject to the condition that Mg atoms substitute into ZnS structure. The additional related work deals with the sol-gel synthesis of BaTiO3 and Sr- doped BaTiO3 thin films having the composition BaTiO3+xSr (0 ≤ x ≤ 0.4) on Ti-substrate by spin coating. The barium acetate (Ba (C2H3O2)2), titanium (iv) n-butoxide (C16H36O4Ti), and strontium acetate (Sr (C2H3O2)2·2 H2O) were taken as preliminary materials. The starting materials were taken according to the stoichiometric proportions and mixed carefully in aqueous phases for uniform compositions. First of all barium acetate was dissolved in heated glacial acetic acid and then strontium acetate was added to this solution while stirring it so that all the particles were dissolved. After that a stoichiometric amount of titanium (iv) n-butoxide was dissolved in 2-methoxy-ethanol and added to the solution still under stirring. To stabilize the solution, ethylene glycol was added in proportion of 1:3 to acetic acid. The final solutions that were used for spin coating on titanium substrates have a concentration of 0.4 M. The structural, morphological and electrical characteristics of the Sr-doped BaTiO3 were studied. The X-ray diffraction results of BaTiO3 and Sr-doped BaTiO3 show the enhancement in the crystallinity of the films by increasing Sr-content. SEM measurements of doped and undoped BaTiO3 films reveal their uniform and cracks free nature. The P-E measurements of these thin films show the reduction in the ferroelectric properties with increasing the Sr content.