Clarina R. dela Cruz

Clarina dela Cruz

Position: Lead Instrument Scientist

Instrument: Neutron Powder Diffractometer

Group: Structure of Matter

Division: Quantum Condensed Matter Division

Facility: High Flux Isotope Reactor

Contact: delacruzcr@ornl.gov or (865) 241-2431

​Clarina dela Cruz received her BS and MS degrees in Physics at the National Institute of Physics, University of the Philippines-Diliman in 2001 and 2003 where she fabricated and studied the transport properties of various cuprate high temperature superconductors. She proceeded to complete her PhD in Physics at the University of Houston in 2006, high-lighted by her work on the pressure effect in multiferroic materials at the High Pressure and Low Temperature Laboratory of the Texas Center for Superconductivity under Dr. Paul Chu. She then pursued a Postdoctoral fellowship at the Department of Physics and Astronomy, University of Tennessee (UT) and the Neutron Scattering Science Division, Oak Ridge National Laboratory (ORNL) with Dr. Pengcheng Dai And Dr. Herbert Mook. As a dual UT/ORNL postdoc, she learned to use neutron scattering techniques to study correlated electron systems particularly the Fe-based superconductors. Currently, she is part of the Quantum Condensed Matter Division at ORNL working as the lead instrument scientist for the HB-2A Neutron Powder Diffractometer housed at the High Flux Isotope Reactor, ORNL.

Clarina grew up in Kalibo, Aklan, a town in Panay island, located in the middle of the Philippine archipelago.

Education

Undergraduate Level: BS PHYSICS
1996-2001 National Institute of Physics University of the Philippines, Diliman, Quezon City, PHIL
Undergraduate Thesis Title: “Investigation of electrical dissipation properties of a Bi2Sr2CaCu2Oδ Thin Film”

Graduate Level: MS PHYSICS
2001-2003 National Institute of Physics University of the Philippines, Diliman, Quezon City,PHIL
MS Thesis Title: “The Magnetoresistance Profile of a Bi2Sr2CaCu2Oδ HTSC: On the dependence of the Potential Barrier in the flux creep process on the Applied Magnetic Field and temperature”

Graduate Level: PhD PHYSICS
2003-2006 Department of Physics University of Houston, Houston, Texas, USA
Dissertation Title: “Spin Frustration, Ferroelectricity and Spin-Lattice Coupling in Multiferroic Rare Earth Manganites”, defended Sept. 29, 2006

Postdoctoral Research Fellowship
2007-2009 Neutron Science Directorate, ORNL and Dept. of Physics and Astronomy, University of Tennessee Oak Ridge,TN,USA and Knoxville,TN, USA
Neutron Scattering Research in Multiferroic materials and Oxypnictide FeAs-based superconductors
Advisers: Pengcheng Dai, PhD and Herbert A. Mook, PhD

Research

​Experimental Condensed matter physics focused on studying correlated electron systems including unconventional superconductors, iron-based superconductors and multifunctional materials such as multiferroic systems. The use of various neutron scattering techniques in investigating the correlation between structure, magnetism and physical properties is a central theme, with further studies into tuning these properties at ultra-low temperatures as well as high magnetic fields and pressure.

Selected Publications

  1. ​M. Zhu, D. Do, C. R. Dela Cruz, Z. Dun, H. D. Zhou, S. D. Mahanti, and X. Ke, "Tuning magnetic exchange via a control of orbital hybridization in Cr2(Te1-xWx)O6" Phys. Rev. Lett. 113, 076406 (2014).
  2. Amuneke N. E., Tapp J., C. R.dela Cruz, Moeller A., "Experimental Realization of a Unique Class of Compounds: 242 XY-Antiferromagnetic Triangular Lattices, KAgFe[VO] 242and RbAgFe[VO], with Ferroelectric Ground States", Chemistry of Materials , 26, 5930−5935. (2014).
  3. Chetan Dhital, Tom Hogan, Z. Yamani, Clarina de la Cruz, Xiang Chen, Sovit Khadka, Zhensong Ren, and Stephen D. Wilson. “Neutron scattering study of correlated phase behavior in Sr2IrO4”, PHYSICAL REVIEW B 87, 144405 (2013).
  4. J. Hwang, E. S. Choi, F. Ye, C.R. dela Cruz, Y. Xin, H. D. Zhou, and P. Schlottmann, ”Successive magnetic phase transitions and multiferroicity in Spin-1 triangular lattice antiferromagnet Ba3NiNb2O9”,PRL 109, 257205 (2012)
  5. Clarina de la Cruz, W. Z. Hu, Shiliang Li, Q. Huang, J. W. Lynn, M. A. Green, G. F. Chen, N. L. Wang, H. A. Mook, Qimiao Si, and Pengcheng Dai , “Lattice Distortion and Magnetic Quantum Phase Transition in CeFeAs1-xPxO” Phys. Rev. Lett. 104, 017204 (2010)
  6. Shiliang Li, Clarina de la Cruz, Q. Huang, Y. Chen, J. W. Lynn, Jiangping Hu, Yi-Lin Huang, Fong-Chi Hsu, Kuo-Wei Yeh, Maw-Kuen Wu, and Pengcheng Dai, “First-order magnetic and structural phase transitions in Fe1+ySexTe1−x’, Phys. Rev. B 79, 054503 (2009).
  7. Clarina de la Cruz, Q. Huang, J. W. Lynn, Jiying Li, W. Ratcliff II, J. L. Zarestky, H. A. Mook, G. F. Chen, J. L. Luo, N. L. Wang, Pengcheng Dai, “Magnetic Order versus superconductivity in the Iron based layered La(O1-xFx)FeAs systems”, Nature 453, 899-902 (12 June 2008).
  8. J. Zhao, Q. Huang, C. de la Cruz, S. Li, J. W. Lynn, Y. Chen, M. A. Green, G. F. Chen, G. Li, Z. C. Li, J. L. Luo, N. L. Wang, and P. Dai, “Structural and Magnetic Phase Diagram of CeFeAsO1-xFx and its Relationship to High-Temperature Superconductivity, Nature Materials 7, 953 (2008).
  9. C. R. dela Cruz, B. Lorenz, W. Ratcliff, J. Lynn, M. M. Gospodinov, and C. W. Chu. “The Pressure Effect on the Magnetic Commensurability and Ferroelectricity in Multiferroic HoMn2O5,” , Physica B 403, 1359 (2008).
  10. C. R. dela Cruz, B. Lorenz, Y. Y. Sun, Y. Wang, S. Park, S-W. Cheong, M. M. Gospodinov, and C. W. Chu “Pressure-induced enhancement of ferroelectricity in multiferroic RMn2O5 (R=Tb,Dy,Ho)”, Phys. Rev. B 76, 174106 (2007)
  11. C. R. dela Cruz, F. Yen, B. Lorenz, M. M. Gospodinov, C. W. Chu, W. Ratcliff, J. W. Lynn, S. Park, S.-W. Cheong, “Structural Anomalies at the Magnetic and Ferroelectric Transitions in RMn2O5 (R=Tb, Dy, Ho)”, Phys. Rev. (Rapid Communication) B 73, 100406 (R) (2006)
  12. C. R. dela Cruz, F. Yen, B. Lorenz, M. M. Gospodinov, and C. W. Chu “Strong spin-lattice coupling in multiferroic HoMnO3: Thermal expansion anomalies and the pressure effect”, Physical Review B (Rapid Communication) 71,060407(R) 2005

Awards, Honors and Memberships

  • Early Career Researcher Award, 2014 UT-Battelle Awards Night, November 7, 2014
  • 2014 Outstanding Young Achiever of Aklan in the field of PHYSICS, The BEN HUR Z. MOBO “MOVE AKLAN FORWARD” FOUNDATION, INC., April 21, 2014, Aklan, Philippines
  • 2014 Young Scientist Prize, International Union of Physics and Applied Physics, Commission on the Structure and Dynamics of Condensed Matter (C10)
  • 2010 Gordon Battelle Team Award, Team award for Studies on Iron-based superconductors, ORNL January 31, 2011
  • Outstanding Aklanon in Technology Research, Provincial Government of Aklan, Panay Island, Philippines (2007)
  • Sigma Xi Graduate Student Research Achievement Award Winner (2006)
  • 1st Place, Graduate Student Competition, 50th Int’l. Conference in Magnetism and Magnetic Materials, November 2005
  • Most Outstanding Graduate Student Presentation, APS-Texas Section Fall Meeting, October 2005
  • 1st place Best Student Competition, Texas Center for Superconductivity Fall Student Symposium, December 2004.
  • Cum Laude, BS Physics National Institute of Physics (2001)
  • Most Outstanding Graduate, BS Physics, University of the Philippines (2001)
  • Bank of the Philippine Islands National Science Awardee (2001)
  • Member: American Crystallography Association (ACA) (2009-present)
  • Member: Materials Research Society (MRS) (2008-present)
  • Member: American Physical Society (APS) (2005-present)