Publications

Dependence of Exchange Coupling on Interfacial Conditions in SmCo₅/Co System: A First-Principles Study.

D.X. Wu, Q.M. Zhang, J.P. Liu, and R.F.Sabiryanov

J. NanoSci. NanoTech., in press.

 

High thermal stability of carbon-coated L10-FePt nanoparticles prepared by salt-matrix annealing.

Chuan-Bing Rong, Narayan Poudyal, Girija S. Chaubey, Vikas Nandwana, Yuzi Liu, Y. Q. Wu, M. J. Kramer,

M. E. Kozlov, R. H. Baughman, and J. Ping Liu

J. Appl. Phys. 103, 07E131 (2008)

 

Element-specific recoil loops in Sm–Co/Fe exchange-spring magnets.

Y. Choi,a J. S. Jiang, J. E. Pearson, and S. D. Bader, J. P. Liu

J. Appl. Phys. 103, 07E132 (2008).

 

First-principles prediction of enhanced magnetic anisotropy in FeCo alloys.

Dangxin Wu, Qiming Zhang, J. Ping Liu, Dingwang Yuan, and Ruqian Wu

Appl. Phys. Lett., 92 (2008) 052503.

 

Synthesis and Characterization of Bimagnetic Bricklike Nanoparticles.

Girija S. Chaubey, Vikas Nandwana, Narayan Poudyal, Chuan-bing Rong, and J. Ping Liu

Chem. Mater. , 20 (2008) 475–478.

 

A Novel Approach to Synthesis of FePt Magnetic Nanoparticles.

Kevin E. Elkins, Girija S. Chaubey, Vikas Nandwana, J. Ping Liu

Journal of Nano Reserach Vol. 1 (2008) pp. 23-29

 

SmCo₅/Fe Nanocomposites Synthesized from Reductive Annealing of Oxide Nanoparticles.

Yanglong Hou, Shouheng Sun, Chuanbing Rong, and J. Ping Liu

Appl. Phys. Lett., 91 (2007) 153117.

 

Sm-Co hard magnetic nanoparticles prepared by surfactant-assisted ball milling.

YipingWang, Yang Li, Chuanbing Rong and J Ping Liu

Nanotechnology, 18 (2007) 465701.

A facile synthesis of SmCo5 magnets from Core/Shell Co/Sm2O3 nanoparticles.
Y Hou, Z. Xu, S. Peng, C. Rong, J. P. Liu, S. Sun
Advanced Materials, 19 (2007) 3349-3352.

Orientation and magnetic properties of FePt and CoPt films grown on MgO(110) single-crystal substrate by electron-beam coevaporation.

Minghui Yu, H. Oguchi, I. Takeuchi, J. P. Liu, D. Josell, L. A. Bendersky, and A. J. Zambano

Mater. Sci. Eng. B  142, 139 (2007).

Structural phase transition and ferromagnetism in monodisperse 3 nm FePt particles.
Chuan-bing Rong, Narayan Poudyal, Girija S Chaubey, and Vikas Nandwana, R. Skomski, Y. Q. Wu and M. J. Kramer, J. Ping Liu
J. Appl. Phys. 102, 043913 (2007).

Controlled Interface Profile in Sm-Co/Fe Exchange-Spring Magnets,
Y. Choi, J. S. Jiang, J. E. Pearson, S. D. Bader, J. Kavich, J. W. Freeland and J. P. Liu
Appl. Phys. Lett. 91 (2007), 072509.

Bulk FePt-based nanocomposite magnets with enhanced exchange coupling,
Chuan-Bing Rong, Vikas Nandwana, Narayan Poudyal, and J. Ping Liu, Mikhail E. Kozlov and Ray H. Baughman, Yong Ding and Zhong Lin Wang
J. Appl. Phys. 101, 023908 (2007). 

Origin of Recoil Loops in Sm-Co/Fe Exchange-Spring Magnets,
Y. Choi, J. S. Jiang, J. E. Pearson, S. D. Bader, and J. P. Liu
Appl. Phys. Lett. 91, 022502 (2007).

Electronic and magnetic structure of L10-FePt nanoparticle embedded in FePt random alloy,

Yang Wang, G.M. Stocks, Aurelian Rusanu, D.M.C. Nicholson, Markus Eisenbach, Qiming Zhang, and J.P. Liu

IEEE Transactions on Magnetics, VOL. 43, NO. 6, JUNE 2007

Controlled synthesis and chemical conversions of FeO nanoparticles,
Y. Hou, Z. Xu, S. Sun
Angew. Chem. Int. Ed. 46 (2007), 6329.

 

A General Strategy for Synthesizing FePt Nanowires and Nanorods.

Chao Wang, Yanglong Hou, Jaemin Kim, and Shouheng Sun

Angew. Chem. Int. Ed. 2007, 46, 6333

 

Temperature- and magnetic-field-induced phase transitions in Fe-rich FePt alloys.

Chuan-Bing Ronga and J. Ping Liu

APPLIED PHYSICS LETTERS 90, 222504 2007

 

Synthesis and Stabilization of FeCo Nanoparticles.

Girija S. Chaubey, Carlos Barcena, Narayan Poudyal, Chuanbing Rong, Jinming Gao, Shouheng Sun, and J. Ping. Liu

J. AM. CHEM. SOC. 2007, 129, 7214-7215

 

Microstructures and magnetic alignment of L10 FePt nanoparticles,
Shishou Kang, Shifan Shi, Zhiyong Jia, G. B. Thompson, David E. Nikles, J. W. Harrell, Daren Li, Narayan
Poudyal, Vikas Nandwana, and J. Ping Liu
J. Applied Physics, 101 (2007), 09J113.

 

Synthesis and Self-Assembly of fcc Phase FePt Nanorods.

Min Chen, Timothy Pica, Ying-Bing Jiang, Peng Li, Kazuaki Yano, J. Ping Liu, Abhaya K. Datye, and Hongyou Fan

J. AM. CHEM. SOC. (2007), 129, 6348-6349

 

Dependence of Exchange Coupling Interaction on Micromagnetic Constants in Hard/soft Magnetic Bilayer
Systems,
A. J. Zambano, H Oguchi, I. Takeuchi, Y. Choi, J. S. Jiang, J. P. Liu, S. E. Lofland, D. Josell and L. A. Bendersky
PHYSICAL REVIEW B, 75 (2007), 144429-1-7.

 

Bulk FePt/Fe3Pt nanocomposite magnets prepared by spark plasma sintering,
Chuan-bing Rong, Vikas Nandwana, Narayan Poudyal, J.Ping Liu, Tetsuji Saito, Yaqiao Wu, and Matthew J. Kramer
J. Applied Physics, 101 (2007), 101 (2007), 09K515.

 

Role of diffused Co atoms in improving effective exchange coupling in Sm-Co/Fe spring magnets,
Y. Choi, J. S. Jiang, Y. Ding, R. A. Rosenberg, J. E. Pearson, S. D. Bader, A. Zambano, M. Murakami, I.
Takeuchi, Z. L. Wang, and J. P. Liu
PHYSICAL REVIEW B, 75 (2007), 104432-1-6.

 

Curie temperatures of annealed FePt nanoparticle systems,
Chuan-Bing Rong, Yang Li, and J. Ping Liu
J. Applied Physics, 101 (2007), 09K505.

 

Shock compression response of nanoiron powder compact,
Chengda Dai, Daniel Eakins, and Naresh Thadhani, J. Ping Liu
Appl. Phys. Lett. 90, (2007), 071911.

 

Orientation and magnetic properties of FePt and CoPt films grown on MgO(1 1 0) single-crystal substrate by electron-beam coevaporation

Minghui Yu, H. Ohguchi, A. Zambano, I. Takeuchi, J.P. Liu, D. Josell and L.A. Bendersky
Mater. Sci. Eng. B 142 (2007) 139–143

Formation of Fe₃Pt phase in FePt-based nanocomposite magnets,
Chuan-bing Rong, Vikas Nandwana1, Narayan Poudyal, Yang Li, J Ping Liu, Yong Ding and Zhong Lin Wang
J. Phys. D: Appl. Phys. 40 (2007), 712–716.
 

Size and Shape Control of Monodisperse FePt Nanoparticles,
Vikas Nandwana, Kevin E. Elkins, Narayan Poudyal, Girija S. Chaubey, Kazuaki Yano, and J. Ping Liu
J. Phys. Chem. C, 111(2007), 4185-4189.

 

Size-dependent chemical and magnetic ordering in L1₀ FePt nanoparticles,
Chuanbing Rong, Daren Li, Vikas Nandwana, Narayan Poudyal, Yong Ding, Zhonglin Wang, Hao Zeng and J.Ping Liu
Advanced Materials,18 (2006), 2984-2988.

 

Magnetic Properties of FePt Nanoparticles Annealed With NaCl,
B. A. Jones, J. D. Dutson1, K. O’Grady, B. J. Hickey, Daren Li, Narayan Poudyal, and J. Ping Liu
IEEE Trans on Magn., 42 (2006), 3066-3068.

Phase Transformation of FePt Nanoparticles

J. P. Liu, K. Elkins, D. Li, V. Nandwana, N. Poudyal

IEEE TRANSACTIONS ON MAGNETICS, VOL. 42, NO. 10, OCTOBER 2006

 

Rapid thermal processing of magnetic materials.
Zhi-qiang Jin, J.P. Liu
J. of Physics D: Applied Physics, 39 (2006), R227-R244.

 

The Pulse-Thermal Processing of NdFeB-Based Nanocomposite Magnets

Z.Q. Jin, V.M. Chakka, Z.L. Wang, J.P. Liu, P. Kadokar, and R.D. Ott

JOM, June (2006), 46

 

Electro-oxidation of formic acid catalyzed by FePt nanoparticles

W. Chen, J. Kim, S. Sun, S. Chen

Phys. Chem. Chem. Phys., 2006, 8, 2779–2786

 

Synthesis of FePt Nanocubes and Their Oriented Self-Assembly

Min Chen, Jaemin Kim, J. P. Liu, Hongyou Fan, and Shouheng Sun

J. Am. Chem. Soc., 128 (2006), 7132-7133.

 

Magnetic Nanoparticles Produced by Surfactant-Assisted Ball Milling

 

Hard Magnetic FePt Nanoparticles by Salt-Matrix Annealing

Recent Advances in Chemical Synthesis, Self-Assembly, and Applications of FePt Nanoparticles
Shouheng Sun
Adv. Mater. 2006, 18, 393–403

Mechanism of the anomalous temperature dependence of coercivity in Sm(Co,Fe,Cu,Zr)z high-temperature magnets

Rapid magnetic hardening by rapid thermal annealing in NdFeB-based nanocomposites
Kung-Te Chu, Z Q Jin, Vamsi M Chakka and J P Liu
J. Phys. D: Appl. Phys. 38 (2005) 4009–4014

Magnetic hardening in ultrafine FePt nanoparticle assembled films
V Nandwana, K E Elkins and J P Liu
Nanotechnology 16 (2005) 2823–2826  

Interphase exchange coupling in Fe/Sm–Co bilayers with gradient Fe thickness
Ming-hui Yu,a Jason Hattrick-Simpers, and Ichiro Takeuchi, Jing Li and Z. L. Wang, J. P. Liu, S. E. Lofland and Somdev Tyagib, J. W. Freeland D. Giubertoni, M. Bersani, and M.Anderle
JOURNAL OF APPLIED PHYSICS 98, 063908 2005

Monodisperse face-centred tetragonal FePt nanoparticles with giant coercivity
Kevin Elkins, Daren Li, Narayan Poudyal, Vikas Nandwana, Zhiqiang Jin, Kanghua Chen and J Ping Liu
J. Phys. D: Appl. Phys. 38 (2005) 2306–2309

Review Articles

 

Recent Advances in Chemical Synthesis, Self-Assembly, and Applications of FePt Nanoparticles

Shouheng Sun

Advanced Materials, 18 (2006), 393-403.

 

Rapid thermal processing of magnetic materials.

Zhi-qiang Jin, J.P. Liu

 J. Phys. D: Appl. Phys. 39 (2006) R227–R244, invited.

Invited Talks and Conference Presentations:

Ferromagnetic nanoparticles prepared by novel annealing techniques,
J. P. Liu
International Conference on Nanoscale Magnetism, June 26, 2007, Istanbul, Turkey.

On the applicability of analytical models to predict Hugoniot of nano-sized powder compacts,
C. D. Dai, D. Eakins, N. N. Thadhani,
Proceedings of 15th APS Topical Conference on Shock Compression of Condensed Matter, in press (2007).

Invited colloquium on exchange coupled nanocomposite magnets.
J.P.Liu
Van der Waals – Zeeman Institute, University of Amsterdam, the Netherlands,  June 21, 2007, invited by Dr. Ekkes Brück.

Invited colloquium on ferromagnetic nanoparticles. 
J. P. Liu
IFW Dresden, Dresden, Germany, June 19, 2007, invited by Dr. Anke Kirchner.

FePt nanoparticle arrays for information storage applications,
Shouheng Sun,
ACS Mid-Atlantic Regional Meeting, May 16-18, 2007, Collegeville, PA.
 

Shape induced texture of magnetic nanoparticles,
Shouheng Sun
MRS Spring Meeting, April 9-13, 2007, San Francisco, CA.

Novel synthesis of air-stable FeCo nanoparticles,
G.S. Chaubey, N. Poudyul, C. Rong and J.P. Liu,
The 233rd American Chemical Society National meeting. Chicago, IL, March 26, 2007.

First-principles study of interface exchange coupling in SmCo5/Co nanocomposite materials,
DANGXIN WU, QIMING ZHANG, J.P. LIU, RENAT F. SABIRIANOV,
2007 APS March Meeting, March 5–9, 2007; Denver, Colorado, V14- 11.

High-throughput Investigation of Exchange Coupling Interaction in Soft/Hard Magnetic Bilayer Systems,
A. ZAMBANO, H. OGUCHI, I. TAKEUCHI, Y. CHOI, J. S. JIANG, J. P. LIU, S. LOFLAND, D.
JOSELL, L. BENDERSKY,
2007 APS March Meeting, March 5–9, 2007; Denver, Colorado, V14- 10.

Bulk nanocomposite magnets with enhanced exchange coupling,
CHUAN-BING, RONG, VIKAS NANDWANA, J. PING LIU,
2007 APS March Meeting, March 5–9, 2007; Denver, Colorado, V14- 9.
 

Element- and depth resolved magnetic study of Sm-Co/Fe exchange spring magnet films with enhanced
effective coupling1,
Y. CHOI, J. S. JIANG, J. E. PEARSON, S. D. BADER, Y. DING, Z. L. WANG, A. ZAMBANO, M.
MURAKAMI, I. TAKEUCHI, J. P. LIU,
2007 APS March Meeting, March 5–9, 2007; Denver, Colorado,V14- 8.

Synthesis and characterization of hard/soft bimagnetic nanoparticles,
VIKAS NANDWANA, GIRIJA SHANKAR CHAUBEY, KAZUAKI YANO, J. PING LIU,
2007 APS March Meeting, March 5–9, 2007; Denver, Colorado,V14- 7.
 

FeCo Nanoparticles by Salt-Matrix Annealing,
NARAYAN POUDYAL, GIRIJA S.
CHAUBEY, CHUAN-BING RONG, J. PING LIU,
2007 APS March Meeting, March 5–9, 2007; Denver, Colorado, P14-11.

Linear scaling ab initio approach to the electronic structure calculation for L10-FePt nanoparticles
embedded in FePt random alloy,
YANGWANG, G. MALCOLM STOCKS, AURELIAN RUSANU, DON NICHOLSON, MARKUS
EISENBACH, QIMING ZHANG, J.P. LIU,
2007 APS March Meeting, March 5–9, 2007; Denver, Colorado, A16-8.

C. D. Dai, D. Eakins, N. N. Thadhani, On the applicability of analytical models to predict Hugoniot of
nano-sized powder compacts, Abstract submitted to 15th APS Topical Conference on Shock Compression
of Condensed Matter, June 24–29, 2007, Hawaii.

N. N. Thadhani, Shock compression of nanoiron powder, Presentation at TMS 2007 Meeting, Orlando, FL,
Feb.26-Mar.1, 2007.

MRS Fall Meeting 2006, Boston, November 29, 2006. Inter-particle Magnetic Interactions in Nanoparticle
Compacts, C.P. Rong, V. Nandwana and J.P. Liu.

MRS Fall meeting 2006 Boston, 2006. High-throughput Investigation of Exchange Coupling Interaction in
Soft/Hard Magnetic Bilayer Systems for Development of Nanocomposite Magnets. A. J. Zambano, H.
Oguchi, I. Takeuchi, S. Lofland, D. Josell, L. A Bendersky and J. P. Liu.
 

The 4th International Workshop on Combinatorial Materials Science and Technology - Puerto Rico
(2006) • Combinatorial Investigations of Exchange Coupling in Soft/Hard Magnetic Bilayer Systems for
Development of Nanocomposite Magnets, A. J. Zambano , H. Oguchi , I. Takeuchi , Y. Choi , J. S. Jiang , J.
P. Liu , S. Lofland , D. Josell , L. Bendersky.
 

Invited Presentations at National Aerospace Institute, NASA Langley, Virginia (Nov.13) and at the Johns
Hopkins University (Nov. 1), Naresh Thadhani.
 

J.Ping Liu, Invited talk on magnetic nanoparticles and nanocomposite magnets at the MS&T’06
(Materials Science & Technology 2006) conference, October 16, 2006, at Cincinnati, OH.

J.Ping Liu, Invited presentation in the Gordon Research Conference – “Magnetic Nanostructures”,
September 7, 2006, at Oxford University, UK.
 

J.Ping Liu, Invited talk in the the 6th Annual Emerging Information Technology Conference on
advanced nanomagnets, August 11, 2006, Conference Center, University of Texas at Dallas, TX.
 

N.N. Thadhani, Fabrication of Bulk Nano-Composite Permanent Magnets by Shock Compaction of
nanoparticles, THERMEC International Conference, Vancouver, July 4-8, 2006.

N.N. Thadhani, Shock Processing of Bulk Exchange-coupled Nanocomposite Permanent Magnets,
CIMTEC World Ceramics Congress, Sicily, June 4-9, 2006

J.P. Liu, on phase transition in FePt nanoparticles, invited talk in INTERMAG 06 Conference, San
Diego, California, May 11, 2006.

SHOCK COMPRESSION RESPONSE OF FePt AND FePt/Fe3Pt NANOPARTICLES: EXCHANGE-COUPLED NANOCOMPOSITE MAGNETS
Z. Q. Jin, J. Li, N. N. Thadhani, Z. L. Wang, T. Vedantam, J. P. Liu
14thAPS Topical Conference 2005, Baltimore, MD, July 31, 2005 p