Now showing items 7-14 of 14

    • Electrical properties of fresnoite Ba2TiSi2O8 using impedance spectroscopy 

      Rozana Aina, Maulat Osman, Dr. ; Mohd Sobri, Idris, Dr. (Trans Tech Publications, 2013)
      Fresnoite with composition Ba2TiSi2O8 (B2TS2) was first found in 1965, adopting a non-centrosymmetric structure. It also reported to crystallize in a tetragonal unit cell with a=8.52Å and c=5.210Å leading to some possible ...
    • The existing of oxygen nonstoichiometry in complex lithium oxides 

      Mohd Sobri, Idris, Dr. (Trans Tech Publications, 2013)
      The possibility of oxygen deficiency in lithium-based complex oxides particularly for layered rock salt structures has little attention in the literature, in spite of the importance of these materials as potential lithium ...
    • The fabrication of artificial marble from dolomite (Batu Reput) 

      Kamarudin, Hussin; Shamsul Baharin, Jamaludin; Che Mohd Ruzaidi, Ghazali; Mohd Sobri, Idris; Mohd Nazry, Salleh; Mohabattul Zaman, S NS Bukhari; Khairul Nizar, Ismail (The Mineral, Metals & Materials Society (TMS), 2006-01)
      Perlis is one of the major producers of "Batu Reput" in Malaysia and majority of the deposits contain of high-purity calcium and magnesium carbonate. The composition of Batu Reput is similar with the ordinary dolomite. ...
    • Ferroelectric and relaxor ferroelectric to paralectric transition based on Lead Magnesium Niobate (PMN) materials 

      Rozana Aina, Maulat Osman, Dr.; Mohd Sobri, Idris, Dr.; Zul Azhar, Zahid Jamal, Dato Prof. Dr.; Sanna, Taking, Dr.; Syarifah Norfaezah, Sabki, Dr.; Poopalan, Prabakaran, Dr.; Mohd Natashah, Norizan; Ili Salwani, Mohamad (Trans Tech Publications, 2013)
      First ferroelectric materials were found in Rochelle salt was in a perovskite structure. Lead Magnesium Niobate (PMN) is a perovskites with a formula of PbMg1/3Nb2/3O3 (PMN) and are typical representatives for most of all ...
    • Physical & Chemical properties of Pulverised Fuel Ash 

      Khairul Nizar, Ismail, Dr.; Kamarudin, Hussin, Kol. Prof. Dato' Dr.; Mohd Sobri, Idris (Universiti Malaysia Perlis (UniMAP), 2007-06-09)
      Pulverised fuel ash is the finely divided mineral residue resulting from the combustion of coal in electric generating plants. Pulverised fuel ash consists of inorganic, incombustible matter present in the coal that has ...
    • The Production of Lightweight Aggregates from Local Wastes 

      Khairul Nizar, Ismail, Dr.; Mohd Sobri, Idris; Kamarudin, Hussin, Brig. Jen. Dato' Prof. Dr.; Sabarudin, Mohd; Khairun Azizi, Mohd Azizli (International Exhibition of Inventions, 2007-04-18)
      The main aim of this reasearch was to produce lightweight aggregates which can be used as replacement for normal (natural) aggregates in structural concrete. Rice Husk Ash, Fly Ash and Quarry Dust was the main raw materials ...
    • Studies on Bare and Mg-doped LiCoO2 as a cathode material for Lithium ion Batteries 

      Reddy, M. V.; Thor, Wei Jiea; Jafta, Charl Jeremy; Ozoemena, Kenneth Iyke; Mathe, Mkhulu Kenny; Nair, A. Sreekumaran; Soo, Soon Peng; Mohd Sobri, Idris, Dr.; Balakrishna, Geetha R.; Ezema, Fabian I.; Chowdari, B. V R (Elsevier Ltd., 2014-05)
      In this paper, we report on the preparation of bare and Mg-doped Li(Mg xCo1-x)O2 (x = 0, 0.03, 0.05) phases by a molten salt method and their electrochemical properties. They were prepared at 800 °C for 6 h in air. Rietveld ...
    • A study of clinker microstructure using scanning electron microscope 

      Mohd Sobri, Idris; Shamsul Baharin, Jamaludin; Che Mohd Ruzaidi, Ghazali; Kamarudin, Hussin; Khairul Nizar, Ismail (Malaysian Institute for Nuclear Technology Research (MINT), 2006-11-29)
      This paper presents a study of clinker microstructure using Scanning Electron Microscope with Energy Dispersive Spectrometer (SEM-EDS). Use of SEM-EDS allows measuring bulk phase abundance and surface areas of the phases, ...