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Personal profile

Research Interests

As leader of the Materials Theory and Design Group, our work broadly seeks to identify the critical compositions and atomic structural features that control the electronic properties of complex ternary/quaternary transition metal oxides and fluorides, including single crystals, thin films, and artificial heterostructures. Our goal is to understand and advance routes to direct atomic scale structure for electronic function control by reliably calculating the properties of materials—either previously synthesized or yet to be realized in the lab—using only chemical composition and structure as input. We formulate novel theories to address technical challenges and overcome materials disparities. Our passion is to understand and manipulate materials at their most fundamental – electronic structure – level.

Our computational tools include various levels of first-principles electronic structure methods, symmetry analyses (representation theory), materials informatics methods, and crystal chemistry approaches to study the fundamental properties of materials at the atomic scale. We are pioneering the concept of structure-driven materials properties in electronic, magnetic, optical, and ferroic materials with correlated electrons for a variety of technologies. Success, in part, relies on strong and collaborative work with experimental colleagues to validate theories and ensure virtual discoveries translate into real world applications. The aim is to strategically build functionality into new compounds, atom-by-atom, within two main thrusts:

  1. Microscopic Theory of Adaptive and Responsive Electronic Materials. The goal is to leverage strain, dimensionality, and compositional control over electronic phases, (anti)ferroic phases, and structural transitions to explain how electronic responses emerge in compounds that are not possible in simpler structures and chemistries, enabling the design of materials with antagonistic functions: (a) Atomic structure engineering of metal-insulator (MI) transitions for low-power electronics; (b) Improper ferroic transitions for high-T non-destructive monitoring and capacitive storage technologies; and (c) Circumventing incompatibilities leading to the scarcity of correlated metallic oxide conductors without inversion symmetry, yet exhibiting novel magneto-optical, thermoelectric, and superconducting phases.
  2. Supramolecular Inorganic Crystal Design for Electronic Property Control. The goal is to disentangle the effects of polyhedral connectivity, lattice topology, cation composition, and anion order on phase stability, electronic behavior, and optical performance to formulate predictive materials discovery guidelines: (a) Atomistic strategies to direct bond lengths, create polar environments, and control crystal  field energies for MI-transitions and oxygen reduction/evolution activity; (b) Tailor metal correlation effects in chiral oxides through anionic framework control (mixed-anion substitution); and (c) Dielectric susceptibility and optical absorption design in functional oxides, fluorides, and borates to enhance non-linear optical responses for communication, medical, and spectroscopic technologies based on tunable electromagnetic radiation.

Education/Academic qualification

Materials Science and Engineering, BS, Northwestern University

Materials Science and Engineering, PhD, University of California, Santa Barbara

Fingerprint Dive into the research topics where James M Rondinelli is active. These topic labels come from the works of this person. Together they form a unique fingerprint.

  • 2 Similar Profiles
Oxides Chemical Compounds
Perovskite Engineering & Materials Science
Cations Chemical Compounds
Ferroelectric materials Chemical Compounds
oxides Physics & Astronomy
Electronic structure Chemical Compounds
Density functional theory Chemical Compounds
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Grants 2011 2023

platforms
chemistry
electronic structure
metals
Metal insulator transition
Genes
Structural design
Transistors
Semiconductor materials
Carbon Monoxide
Oxidation
Defects
Catalysts
Density functional theory
engineering
interdisciplinary research
commercialization
research focus
science

Research Output 2006 2019

3 Citations (Scopus)

Anisotropic magnetoresistance in the itinerant antiferromagnetic EuTi O3

Ahadi, K., Lu, X., Salmani-Rezaie, S., Marshall, P. B., Rondinelli, J. M. & Stemmer, S., Jan 7 2019, In : Physical Review B. 99, 4, 041106.

Research output: Contribution to journalArticle

Enhanced magnetoresistance
crystals
crossovers
magnetic moments
alignment

A -site cation size effect on oxygen octahedral rotations in acentric Ruddlesden-Popper alkali rare-earth titanates

Akamatsu, H., Fujita, K., Kuge, T., Gupta, A. S., Rondinelli, J. M., Tanaka, I., Tanaka, K. & Gopalan, V., Jun 10 2019, In : Physical Review Materials. 3, 6, 065001.

Research output: Contribution to journalArticle

titanates
Alkalies
Alkali Metals
Rare earths
Cations
1 Citation (Scopus)

Atomic and electronic structure of domains walls in a polar metal

Stone, G., Puggioni, D., Lei, S., Gu, M., Wang, K., Wang, Y., Ge, J., Lu, X. Z., Mao, Z., Rondinelli, J. M. & Gopalan, V., Jan 9 2019, In : Physical Review B. 99, 1, 014105.

Research output: Contribution to journalArticle

Crystal atomic structure
Domain walls
atomic structure
Electronic structure
domain wall

Catalytic Enhancement of CO Oxidation on LaFeO3 Regulated by Ruddlesden-Popper Stacking Faults

Bornovski, R., Huang, L. F., Komarala, E. P., Rondinelli, J. M. & Rosen, B. A., Sep 18 2019, In : ACS applied materials & interfaces. 11, 37, p. 33850-33858 9 p.

Research output: Contribution to journalArticle

Stacking faults
Carbon Monoxide
Oxidation
Adsorption
Defects

Comprehensive magnetic phase diagrams of the polar metal C a3(R u0.95 F e0.05)2 O7

Lei, S., Chikara, S., Puggioni, D., Peng, J., Zhu, M., Gu, M., Zhao, W., Wang, Y., Yuan, Y., Akamatsu, H., Chan, M. H. W., Ke, X., Mao, Z., Rondinelli, J. M., Jaime, M., Singleton, J., Weickert, F., Zapf, V. S. & Gopalan, V., Jun 10 2019, In : Physical Review B. 99, 22, 224411.

Research output: Contribution to journalArticle

Phase diagrams
Metals
phase diagrams
Magnetization
space temperature