Publications

Featured Paper: First work on Flash Sintering

  • Cologna M, Rashkova B, Raj R. Flash sintering of nanograin zirconia in <5 s at 850°C. J Am Ceram Soc. 2010;93:3556-3559.

Recent Publications

2021

  • Campos JV, Lavagnini IR, Avila V, Yoon B, Ghose S, Raj R, Pallone EMJA, Jesus LM. On the Arrhenius-like behavior of conductivity during flash sintering of 3 mol% yttria stabilized zirconia ceramics. Scr Mater. 2021;203:114093 
  • Avila V, Yoon B, Ghose S, Raj R, Jesus LM. Phase evolution during reactive flash sintering of Li6.25Al0.25La3Zr2O12 starting from a chemically prepared powder. J Eur Ceram Soc. 2021;41:4552-4557 
  • Kathiria R, Wolf DE, Raj R, Jongmanns M. Frenkel pairs cause elastic softening in zirconia: theory and experiments. New J Phys. 2021;23:053013 
  • O'Toole RJ, Yoon B, Gump C, Raj R, Weimer AW. Flash sintering of yttria-stabilized cubic zirconia powders coated with alumina by particle atomic layer deposition. J Am Ceram Soc. 2021;104:2472-2482 

2020

  • Jesus LM, Silva RS, Raj R, M’Peko JC. Electric field-assisted flash sintering of Bi2/3Cu3Ti4O12 starting from a multi-phase precursor powder. J Eur Ceram Soc. 2020;40:4004-4009 
  • Yoon B, Avila V, Raj R, Jesus LM. Reactive flash sintering of the entropy-stabilized oxide Mg0.2Ni0.2Co0.2Cu0.2Zn0.2O. Scr Mater. 2020;181:48-52 
  • Mishra TP, Ingraci Neto RR, Speranza G, Quaranta A, Sglavo VM, Raj R, Guillon O, Bram M, Biesuz M, Electronic conductivity in gadolinium doped ceria under direct current as a trigger for flash sintering, Scr Mater. 2020;179:55-60 
  • Ingraci Neto RR, Raj R, The flash effect in electronic conductors: The case of amorphous carbon fibers, Scr Mater. 2020;179:20-24 
  • Avila V, Yoon B, Ingraci Neto RR, Silva RS, Ghose S, Raj R, Jesus LM. Reactive flash sintering of the complex oxide Li0.5La0.5TiO3 starting from an amorphous precursor powder. Scr Mater. 2020;176:78-82 
  • Kiniger G, Sglavo V, Jha SK, Raj R. Flash-induced spreading of metals on zirconia. Scr Mater. 2020;176:73-77 
  • Jo S, Raj R. Transition to electronic conduction at the onset of flash in cubic zirconia. Scr Mater. 2020;174:29-32 
  • Gil-GonzĂĄlez E, PerejĂłn A, SĂĄnchez-JimĂ©nez PE, Raj R, PĂ©rez-Maqueda LA. Processing and properties of Bi0.98R0.02FeO3(R = La, Sm, Y) ceramics flash sintered at ~650°C in <5 s. J Am Ceram Soc. 2019;103:136-144 

2019

  • Avila V, Raj R. Reactive flash sintering of powders of four constituents into a single phase of a complex oxide in a few seconds below 700°C. J Am Ceram Soc. 2019;102:6443-6448 
  • Clemenceau T, Andriamady N, Kumar M.K P, et al. Flash sintering of Li-ion conducting ceramic in a few seconds at 850 °C. Scripta Mater. 2019;172:1-5. 
  • Mishra TP, Avila V, Neto RRI, Bram M, Guillon O, Raj R. On the role of Debye temperature in the onset of flash in three oxides. Scripta Mater. 2019;170:81-84.
  • Yoon B, Yadav D, Ghose S, Sarin P, Raj R. On the synchronicity of flash sintering with phase transformation. J Am Ceram Soc. 2019;102:3110-3116. 
  • Avila V, Raj R. Flash sintering of ceramic films: the influence of surface to volume ratio. J Am Ceram Soc. 2019;102:3063-3069. 
  • Yoon B, Yadav D, Ghose S, Raj R. Reactive flash sintering: MgO and α-Al2O3 transform and sinter into single-phase polycrystals of MgAl2O4. J Am Ceram Soc. 2019;102:2294-2303.
  • Vendrell X, Yadav D, Raj R, West AR. Influence of flash sintering on the ionic conductivity of 8 mol% yttria stabilized zirconia. J Eur Ceram Soc. 2019;39:1352-1358. 
  • Raj R, Pederiva L, NarisawaL M, Soraru GD. On the Onset of Fracture as a Silicon-Based Polymer Converts into the Ceramic Phase. J Am Ceram Soc. 2019;102:924–929. 
  • Kumar MK, Yadav D, Lebrun JM, Raj R. Flash Sintering with Current‐Rate: A Different Approach. J Am Ceram Soc. 2019;102:823–835. 
  • Kok D, Yadav D, Sortino E, McCormack S, Tseng K, Kriven WM, Raj R, Mecartney M. α-Alumina and spinel react into single phase high-alumina spinel in < 3 seconds during flash sintering. J Am Ceram Soc. 2019;102:644–653. 

2018

  • Jongmanns M, Raj R, Wolf D. Generation of Frenkel defects above the Debye temperature by proliferation of phonons near the Brillouin zone edge. New J Phys. 2018;20:093013. 
  • Yoon B, Yadav D, Raj R, et al. Measurement of O and Ti atom displacements in TiO2 during flash sintering experiments. J Am Ceram Soc. 2018;101:1811-1817. 
  • Gil-GonzĂĄlez E, PerejĂłn A, SĂĄnchez-JimĂ©nez PE, SayaguĂ©s MJ, Raj R, PĂ©rez-Maqueda LA. Phase-pure BiFeO3 produced by reaction flash-sintering of Bi2O3 and Fe2O3. J Mater Chem A. 2018;6:5356-5366. 
  • McLaren CT, Heffner WR, Raj R, Jain H. AC electric field-induced softening of alkali silicate glasses. J Am Ceram Soc. 2018;101:2277-2286. 

2017

  • Lebrun JM, Hellberg CS, Jha SK, Kriven WM, Steveson A, Seymour KC, Bernstein N, Erwin SC, Raj R. In-situ measurements of lattice expansion related to defect generation during flash sintering. J Am Ceram Soc. 2017;100:4965-4970. 
  • Yadav D, Raj R. Two unique measurements related to flash experiments with yttria-stabilized zirconia. J Am Ceram Soc. 2017;100:5374-5378. 
  • Yadav D, Raj R. The onset of the flash transition in single crystals of cubic zirconia as a function of electric field and temperature. Scripta Mater. 2017;134:123-127. 
  • Raj R, Wolfenstine J. Current limit diagrams for dendrite formation in solid-state electrolytes for Li-ion batteries. J Power Sources. 2017;343:119-126. 
  • Raj R, Ramanathan S. Flash transition as a possible origin for low open circuit voltage in thin film solid oxide fuel cells. J Power Sources. 2017;359:48-51. 
  • Perez-Maqueda LA, Gil-Gonzalez E, Perejon A, Lebrun J-M, Sanchez-Jimenez PE, Raj R. Flash sintering of highly insulating nanostructured phase-pure BiFeO3. J Am Ceram Soc. 2017;100:3365-3369. 
  • McLaren C, Roling B, Raj R, Jain H. Mechanism of electric field-induced softening (EFIS) of alkali silicate glasses. J Non-Cryst Solids. 2017;471:384-395. 
  • Kok D, Jha SK, Raj R, Mecartney ML. Flash sintering of a three-phase alumina, spinel, and yttria-stabilized zirconia composite. J Am Ceram Soc. 2017;100:3262-3268. 
  • Seo HK, Kim K, Min SY, Lee Y, Park CE, Raj R, Lee TW. Direct growth of graphene-dielectric bi-layer structure on device substrates from Si-based polymer. 2D Materials. 2017;4(2):024001.
  • Chelliah NM, Singh H, Raj R, Surappa MK. Processing, microstructural evolution and strength properties of in-situ magnesium matrix composites containing nano-sized polymer derived SiCNO particles. ‎Mater. Sci. Eng. A. 2017;685:429-38. 

2016

  • Raj R. Analysis of the power density at the onset of flash sintering. J Am Ceram Soc. 2016;99:3226-3232. 
  • Naik K, Jha SK, Raj R. Correlations between conductivity, electroluminescence and flash sintering. Scripta Mater. 2016;118:1-4. 
  • Lebrun JM, Jha SK, Naik KS, Seymour KC, Kriven WM, Raj R. The change of X-ray diffraction peak width during in situ conventional sintering of nanoscale powders. J Am Ceram Soc. 2016;99:765-768. 
  • Lebrun J-M, Jha SK, McCormack SJ, Kriven WM, Raj R. Broadening of diffraction peak widths and temperature nonuniformity during flash experiments. J Am Ceram Soc. 2016;99:3429-3434. 
  • Jha SK, Lebrun JM, Raj R. Phase transformation in the alumina-titania system during flash sintering experiments. J Eur Ceram Soc. 2016;36:733-739. 
  • Jha SK, Lebrun JM, Seymour KC, Kriven WM, Raj R. Electric field induced texture in titania during experiments related to flash sintering. J Eur Ceram Soc. 2016;36:257-261. 
  • Jha SK, Terauds K, Lebrun JM, Raj R. Beyond flash sintering in 3 mol % yttria stabilized zirconia. J Ceram Soc Jpn. 2016;124:283-288. 
  • Zoli L, Sciti D, Liew LA, Terauds K, Azarnoush S, Raj R. Additive Manufacturing of Ceramics Enabled by Flash Pyrolysis of Polymer Precursors with Nanoscale Layers. J Am Ceram Soc. 2016;99:57-63. 
  • Azarnoush S, Laubscher F, Zoli L, Raj R. Additive Manufacturing of SiCN Ceramic Matrix for SiC Fiber Composites by Flash Pyrolysis of Nanoscale Polymer Films. J Am Ceram Soc. 2016;99:1855-1858. 
  • Jesus LM, Silva RS, Raj R, M’Peko J-C. Electric field-assisted flash sintering of CaCu3Ti4O12: Microstructure characteristics and dielectric properties. J Alloys Compd. 2016;682:753-758. 
  • Jesus LM, Silva RS, Raj R, M'Peko J-C. Electric field-assisted ultrafast synthesis of nanopowders: a novel and cost-efficient approach. RSC Adv. 2016;6:107208-107213. 
  • Corapcioglu G, Gulgun MA, Kisslinger K, Sturm S, Jha SK, Raj R. Microstructure and microchemistry of flash sintered K0.5Na0.5NbO3. J Ceram Soc Jpn. 2016;124:321-328. 
  • Bajpai I, Han Y-H, Yun J, Francis J, Kim S, Raj R. Preliminary investigation of hydroxyapatite microstructures prepared by flash sintering. Adv Appl Ceram. 2016;115:276-281.