RVK Mangalam Photo.jpg

Dr. R. Vengadesh Kumara Mangalam

M.Sc., Ph.D

Research Assistant Professor


My research focuses on functional materials at microscopic, mesoscopic and macroscopic length scales. Functional materials have wide variety of physical phenomena that make them as the potential materials in many technological applications. Most of the functional oxide materials that I am working fall into the broad class of ferroic materials, i.e. ferroelectric / pyroelectric, magnetic and multiferroic materials.

My doctoral thesis research, at JNCASR, Bangalore, was on synthesis, structural characterization and physical properties of ferroic materials, such as BiAlO3, BiMnO3, nanocrystalline BaTiO3, and magnetic perovskites. My research involved synthesizing novel oxide materials, understanding their structure through precise structural refinement using Rietveld refinement method (using X-ray and neutron data) and correlating their properties with the material’s structure. In the post-doctoral positions at Laboratoire CRISMAT, France, and University of Illinois at Urbana-Champaign, United States, my research dealt with fabrication and characterization of functional oxide thin films. In Laboratoire CRISMAT, the research was focused on tuning film properties through epitaxial strain and by fabricating heterostructure. In UIUC, My research was mainly focused on finding high performance ferroelectric materials for thermal applications and the routes to enhance their properties.

Educational:

Ph.D. in Materials Science (2009)
Jawaharlal Nehru Centre for Advanced Scientific Research,
Bangalore, Karnataka, India

M.Sc. Chemistry (2004)
The American College (Affiliated to Madurai Kamaraj University),
Madurai, Tamil Nadu, India

B.Sc. Chemistry (2002)
The American College (Affiliated to Madurai Kamaraj University),
Madurai, Tamil Nadu, India


  • Complex oxides
  • Thin-film heterostructures
  • Ceramic materials
  • Composite materials
  • Nanomaterials
  • Ferroelectric / Pyroelectric materials
  • Magnetic materials
  • Multiferroic materials
  • Metallic oxides
  • Magnetoresistance materials and Materials processing for devices.

Details will be updated soon


Complete list is available in R. V. K. Mangalam’s Google Scholar Citation site

Recent Publications 

  •  J. C. Agar, A. R. Damodaran, M. B. Okatan, J. Kacher, C. Gammer, R. K. Vasudevan, S. Pandya, L. R. Dedon, R. V. K. Mangalam, G. A. Velarde, S. Jesse, N. Balke, A. M. Minor, S. V. Kalinin, and L. W. Martin, Highly mobile ferroelastic domain walls in compositionally graded ferroelectric thin films, Nature Mater., 15, 549 (2016).
  • J. Magesh, P. Murugavel, R. V. K. Mangalam, K. Singh, Ch. Simon, and W. Prellier, Ferroelectric ordering and magnetoelectric effect of pristine and Ho-doped orthorhombic DyMnO3 by dielectric studies, J. Appl. Phys., 118, 074102 (2015).  
  • E. Bruyer, A. Sayede, A. Ferri, R. Desfeux, R. V. K. Mangalam, R. Ranjith, and W. Prellier, Insight on the ferroelectric properties in a (BiFeO3)2(SrTiO3)4 superlattice from experiment and ab initio calculations, Appl. Phys. Lett., 107, 042904 (2015).  
  • J. C. Agar, A. R. Damodaran, G. A. Velarde, S. Pandya, R. V. K. Mangalam, and L. W. Martin, Complex Evolution of Built-in Potential in Compositionally-Graded PbZr1-xTixO3 Thin Films, ACS Nano, 9, 7332-7342 (2015).  
  • A novel, layered phase in Ti-rich SrTiO3 epitaxial thin films, S. Lee, A. R. Damodaran, P. Gorai, N. Oh, J.  A. Moyer, J-H. Kwon, N. Ferdous, A. Shah, Z. Chen, E. Breckenfeld, R. V. K. Mangalam, P. V. Braun, P. Schiffer,  M. Shim, J-M.  Zuo, E. Ertekin, and L. W. Martin, Adv. Mater., 27, 861 (2015).
  • Reduction of the electrocaloric entropy change of ferroelectric PbZr1-xTixO3 epitaxial layers due to an elastocaloric effect, T. Tong, J. Karthik, R. V. K. Mangalam, L. W. Martin, and D. G. Cahill, Phys. Rev. B, 90, 094116 (2014).  
  • Tuning susceptibility via misfit strain in relaxed morphotropic phase boundary PbZr1-xTixO3 epitaxial thin films, J. C. Agar, R. V. K. Mangalam, A. R. Damodaran, G. Velarde, J. Karthik, M. B. Okatan, Z. H. Chen, S. Jesse, N. Balke, S. V. Kalinin, and L. W. Martin, Adv. Mater. Interfaces 1, 1400098 (2014).
  • Improved pyroelectric figures of merit in compositionally graded PbZr1-xTixO3 thin films, R. V. K. Mangalam, J. C. Agar, J. Karthik, A. Damodaran, and L. W. Martin, ACS Appl. Mater. Interfaces, 5, 13235 (2013).  
  • Role of rare earth on the Mn3+ spin reorientation in multiferroic Ho1-xLuxMnO3, J. Magesh, P. Murugavel, R. V. K. Mangalam, K. Singh, Ch. Simon, and W. Prellier, J. Appl. Phys., 114, 094102 (2013).  
  • Pyroelectric electron emission from nanometer-thick films of PbZr1-xTixO3, P. C. Fletcher, R. V. K. Mangalam, L. W. Martin, and W. P. King, Appl. Phys. Lett., 102, 192908 (2013).

 


 Courses Taught

·        CY 104 - Material Technology

·        CY 101 - Chemistry


Interested candidates can contact: 


Dr. R. Vengadesh Kumara Mangalam
Research Assistant Professor,
Research Institute & Department of Chemistry,
University Building - 1309/R-33,
SRM University, Kattankulathur - 603203,
Kancheepuram District, Tamil Nadu, India
Email: vengadeshkumar[dot]r[at]ktr.srmuniv.ac.in