Search results

• 2025

  Using the critical behavior in Zn_1−xMn_xTe to probe the relationship between quasi-two-dimensional and three-dimensional spin-glasses

  Pekarek, T. M., Miotkowski, I. & Ramdas, A. K., Mar 1 2025, In: AIP Advances. 15, 3, 035130.

  Research output: Contribution to journal › Article › peer-review

  Open Access
• 2024

  Exploring the critical behavior of the anomalous spin-glass transition in Ga_1−xMn_xS

  Pekarek, T. M., Blackburn, J. H., Miotkowski, I. & Ramdas, A. K., Feb 1 2024, In: AIP Advances. 14, 2, 025035.

  Research output: Contribution to journal › Article › peer-review

  Open Access
• 2023

  Investigation of a +2 oxidation spin state in weakly doped Cd1-xTixSe

  Dimuna, J., Boyett, T., Miotkowski, I., Ramdas, A. K., Pekarek, T. M. & Haraldsen, J. T., Nov 15 2023, In: Physical Review B. 108, 20, 205202.

  Research output: Contribution to journal › Article › peer-review

• Magnetic transitions and coercive field variations in La_1-xSr_xMnO₃thin films (0.04 ≤ x ≤ 0.50)

  Pekarek, T. M., Taylor, K., Payne, J. A., Bryant, C. T., Tavera, R. M., Brown, D. T. & Warusawithana, M. P., Feb 1 2023, In: AIP Advances. 13, 2, 025025.

  Research output: Contribution to journal › Article › peer-review

  Open Access
• 2022

  Doping dependent electronic and magnetic ordering in mixed-valent La_1-x Sr_x MnO₃thin films

  Payne, J. A., Bryant, C. T., Marquez Tavera, R., Brown, D. T., Pekarek, T. M. & Warusawithana, M. P., Jan 2022, In: Materials Research Express. 9, 1, 016101.

  Research output: Contribution to journal › Article › peer-review

  Open Access
• 2021

  Enhancement of the spin-glass transition temperature through -orbital hybridization in

  Alcantara, A. R., Barrett, S., Matev, D., Miotkowski, I., Ramdas, A. K., Pekarek, T. M. & Haraldsen, J. T., Sep 1 2021, In: Physical Review B. 104, 10, 104423.

  Research output: Contribution to journal › Article › peer-review

  Open Access

• Orbital hybridization in the spin-glass state of Mn-doped ZnTe

  Alcantara, A., Barrett, S., Matev, D., Miotkowski, I., Ramdas, A., Pekarek, T. & Haraldsen, J., Mar 17 2021, In: Bulletin of the American Physical Society. 66, 1

  Research output: Contribution to journal › Meeting abstract › peer-review

• 2018

  Magnetic impurity bands in Gax-1Mnx S: Towards understanding the anomalous spin-glass transition

  Massey, M. C., Manuel, I., Edwards, P. S., Parker, D., Pekarek, T. M. & Haraldsen, J. T., Oct 29 2018, In: Physical Review B. 98, 15, 155206.

  Research output: Contribution to journal › Article › peer-review

  Open Access

• Mechanisms underlying the transition to the long-range spin glass state in the layered quasi-2D III-VI diluted magnetic semiconductor Ga1-xMnxS system

  Pekarek, T., Edwards, P., Manuel, I., Parker, D., Haraldsen, J., Miotkowski, I. & Ramdas, A., Mar 6 2018, In: Bulletin of the American Physical Society. 63, 1

  Research output: Contribution to journal › Meeting abstract › peer-review

• 2017

  Impurity bands and half-metal states in Mn-doped GaS layers

  Haraldsen, J. T., Parker, D., Pekarek, T. & Balatsky, A. V., Mar 17 2017, (Submitted) In: Bulletin of the American Physical Society. 62, 4

  Research output: Contribution to journal › Meeting abstract › peer-review

• Magnetic properties of the layered III-VI diluted magnetic semiconductor Ga1$-$xFexTe

  Pekarek, T., Edwards, P. S., Olejniczak, T. L., Garner, J., Lampropoulos, C., Miotkowski, I. & Ramdas, A. K., Mar 14 2017, In: Bulletin of the American Physical Society. 62, 4

  Research output: Contribution to journal › Meeting abstract › peer-review

• 2016

  Magnetic properties of the layered III-VI diluted magnetic semiconductor Ga 1−x FexTe

  Pekarek, T. M., Edwards, P. S., Olejniczak, T. L., Lampropoulos, C., Miotkowski, I. & Ramdas, A. K., May 29 2016, In: AIP Advances. 6, 5, 056222.

  Research output: Contribution to journal › Article › peer-review
• 2015

  Magnetic properties of layered III-VI Diluted Magnetic Semiconductors (DMS)

  Pekarek, T., Miotkowski, I. & Ramdas, A. K., Mar 3 2015, In: Bulletin of the American Physical Society. 60, 1

  Research output: Contribution to journal › Meeting abstract › peer-review

• 2014

  Exploration of the new class of layered III-VI Diluted Magnetic Semiconductors (DMS)

  Pekarek, T., Miotkowski, I. & Ramdas, A. K., Mar 4 2014, In: Bulletin of the American Physical Society. 59, 1

  Research output: Contribution to journal › Article › peer-review

• 2012

  Magnetization and spin-flip Raman scattering in Cd1−xCrxSe and Cd1−xVxSe

  Lu, X., Miotkowski, I., Rodriguez, S., Ramdas, A. K., Alawadhi, H. & Pekarek, T. M., Sep 28 2012, In: Physical Review B - Condensed Matter and Materials Physics. 86, 11, 115213.

  Research output: Contribution to journal › Article › peer-review

  Open Access

• Raman study of the Verwey transition in Magnetite at high-pressure and low-temperature: Effect of Al doping

  Gasparov, L., Shirshikova, Z., Pekarek, T. M., Blackburn, J., Struzhkin, V., Gavriliuk, A., Rueckamp, R. & Berger, H., Aug 15 2012, In: Journal of Applied Physics. 112

  Research output: Contribution to journal › Article › peer-review

• Raman study of the Verwey transition in Magnetite at high-pressure and low-temperature; effect of Al doping

  Gasparov, L., Shirshikova, Z., Pekarek, T. M., Blackburn, J., Struzhkin, V., Gavriliuk, A., Rueckamp, R. & Berger, H., Feb 29 2012, In: Bulletin of the American Physical Society. 57, 1

  Research output: Contribution to journal › Meeting abstract › peer-review

• 2011

  Ba4KFe3O9: : A Novel Ferrite Containing Discrete 6-Membered Rings of Corner-Sharing FeO4 Tetrahedra

  Zhao, Q., Nellutla, S., Son, W.-J., Vaughn, S. A., Ye, L., Smith, M. D., Caignaert, V., Lufaso, M., Pekarek, T. M., Smirnov, A. I., Whangbo, M.-H. & zur Loye, H.-C., Sep 12 2011, In: Inorganic Chemistry. 50, 20, p. 10310-10318 9 p.

  Research output: Contribution to journal › Article › peer-review

• Correlating Structure with Ferromagnetism in Melt-Spun Gd _100-xFe_x

  Shand, P. M., Schmitter, D. C., Rojas, G., Shield, J. E., Goertzen, J., Meyer, A. L., Pekarek, T. M., Kramer, M. J. & Leslie-Pelecky, D. L., Feb 2011, In: Journal of Alloys and Compounds. 509, 6, p. 3000-3005 6 p.

  Research output: Contribution to journal › Article › peer-review
• 2010

  Spin-Glass Ordering in the Layered III-VI Diluted Magnetic Semiconductor Ga1-xMnxS

  Pekarek, T. M., Watson, E. M., Shand, P. M., Miotkowski, I. & Ramdas, A. K., May 1 2010, In: Journal of Applied Physics. 107, 9, p. 6557 1 p.

  Research output: Contribution to journal › Article › peer-review
• 2009

  Raman studies of doped magnetite above and below the Verwey transition

  Gasparov, L. V., Rush, A., Pekarek, T. M., Patel, N. & Berger, H., Apr 2009, In: Journal of Applied Physics. 105

  Research output: Contribution to journal › Article › peer-review

• Theoretical Model for the Experimental Magnetization Data from the Layered III-VI Diluted Magnetic Semiconductor In1-x Mnx Se (x=0.014 & 0.027)

  Meda, D., Blackburn, J. H., Maxwell, L., Garner, J., Pekarek, T. M., Miotkowski, I. & Ramdas, A. K., May 2009, In: Journal of Applied Physics. 105, 7, 3 p., 07C521.

  Research output: Contribution to journal › Article › peer-review
• 2005

  Anisotropic Magnetization of the III-VI Diluted Magnetic Semiconductor In1-xMnxS in the Mixed State

  Tracy, J. L., Franzese, G., Byrd, A., Garner, J., Pekarek, T. M., Miotkowski, I. & Ramdas, A. K., Oct 15 2005, In: Physical Review B - Condensed Matter and Materials Physics. 72, 16, 165201.

  Research output: Contribution to journal › Article › peer-review

• Magnetic and Transport Measurements on the Layered III-VI Diluted Magnetic Semiconductor In _1-x Mn _xSe

  Pekarek, T. M., Arenas, D. J., Miotkowski, I. & Ramdas, A. K., May 15 2005, In: Journal of Applied Physics. 97, 10, 4 p., 10M106.

  Research output: Contribution to journal › Article › peer-review

• Resonant Electronic Raman Scattering in a Van Vleck II-VI Diluted Magnetic Semiconductor: Cd1-xFexTe

  Tsoi, S., Miotkowski, I., Rodriguez, S., Ramdas, A. K., Alawadhi, H. & Pekarek, T. M., Oct 15 2005, In: Physical Review B - Condensed Matter and Materials Physics. 72, 15, 8 p., 155207.

  Research output: Contribution to journal › Article › peer-review

• Spin Glass or Random Anisotropy? The Origin of Magnetically Glassy Behavior in Nanostructured Gd Al ₂

  Shand, P. M., Stark, C. C., Williams, D., Morales, M. A., Pekarek, T. M. & Leslie-Pelecky, D. L., May 15 2005, In: Journal of Applied Physics. 97, 10, 4 p., 10J505.

  Research output: Contribution to journal › Article › peer-review

• The Singlet Model of the Anisotropic Magnetization of the III-VI Diluted Magnetic Semiconductor, In _1-x Mn _x S

  Franzese, G., Byrd, A., Tracy, J. L., Garner, J., Pekarek, T. M., Miotkowski, I. & Ramdas, A. K., May 5 2005, In: Journal of Applied Physics. 97, 10, 3 p., 10D308.

  Research output: Contribution to journal › Article › peer-review
• 2004

  Disorder-induced depression of the Curie temperature in mechanically milled GdAl₂

  Morales, M. A., Williams, D. S., Shand, P. M., Stark, C., Pekarek, T. M., Yue, L. P., Petkov, V. & Leslie-Pelecky, D. L., Nov 5 2004, In: Physical Review B - Condensed Matter and Materials Physics. 70, 18, p. 1-8 8 p., 184407.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

• Magnetic Measurements on Ferromagnetic Behavior in the Bulk II-VI Diluted Magnetic Semiconductor Zn _1-xCr _xTe

  Pekarek, T. M., Arenas, D. J., Crooker, B. C., Miotkowski, I. & Ramdas, A. K., Jun 1 2004, In: Journal of Applied Physics. 95, 11 , p. 7178-7180 3 p.

  Research output: Contribution to journal › Article › peer-review

• Resonant Electron Spin-Flip Raman Scattering in CdTe and the Diluted Magnetic Semiconductor Cd_1−xV_xTe

  Tsoi, S., Miotkowski, I., Rodriguez, S., Ramdas, A. K., Alawadhi, H. & Pekarek, T. M., Jan 29 2004, In: Physical Review B - Condensed Matter and Materials Physics. 69, 3, 9 p., 035209.

  Research output: Contribution to journal › Article › peer-review
• 2003

  Curie-Weiss Analysis of Ferromagnetic and Glassy Transitions in Nanostructured GdAl₂

  Williams, D., Shand, P. M., Stark, C., Pekarek, T., Brown, R., Yue, L. & Leslie-Pelecky, D. L., May 15 2003, In: Journal of Applied Physics. 93, 10 2, p. 6525-6527 3 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

• Magnetic transitions in disorderedGdAl2

  Williams, D. S., Shand, P. M., Pekarek, T. M., Skomski, R., Petkov, V. & Leslie-Pelecky, D. L., Dec 3 2003, In: Physical Review B - Condensed Matter and Materials Physics. 68, 21

  Research output: Contribution to journal › Article › peer-review

• Magnetic transitions in disordered GdAl₂

  Williams, D. S., Shand, P. M., Pekarek, T. M., Skomski, R., Petkov, V. G. & Leslie-Pelecky, D., Dec 3 2003, In: Physical Review B. 68

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File
• 2002

  Calculation of the magnetization of the layered III-VI diluted magnetic semiconductor (formula presented)

  Fuller, C., Douglas, A., Garner, J., Pekarek, T. M., Miotkowski, I. & Ramdas, A. K., 2002, In: Physical Review B - Condensed Matter and Materials Physics. 65, 19, p. 1-7 7 p.

  Research output: Contribution to journal › Article › peer-review

• Calculation of the Magnetization of the Layered III-VI Diluted Magnetic Semiconductor Ga_1-xMn_xS

  Fuller, C., Douglas, A., Garner, J., Pekarek, T. M., Miotkowski, I. & Ramdas, A. K., May 15 2002, In: Physical Review B - Condensed Matter and Materials Physics. 65, 19, p. 1952111-1952117 7 p., 195211.

  Research output: Contribution to journal › Article › peer-review

  Open Access

• High magnetic field measurements on the layered III-VI diluted magnetic semiconductor Ga _1-xMn _xS

  Pekarek, T. M., Maymi, C., Garner, J., Hall, D., Miotkowski, I. & Ramdas, A. K., May 15 2002, In: Journal of Applied Physics. 91, 10 I, p. 7496-7498 3 p.

  Research output: Contribution to journal › Article › peer-review
• 2001

  Magnetic measurements on the layered III–VI diluted magnetic semiconductor Ga1−xFexSe

  Pekarek, T. M., Fuller, C. L., Garner, J., Crooker, B. C., Miotkowski, I. & Ramdas, A. K., Jun 1 2001, In: Journal of Applied Physics. 89, 11, p. 7030-7032 3 p.

  Research output: Contribution to journal › Article › peer-review

• Optical studies of Dy-doped Bi-2212

  Gasparov, L., Pekarek, T., Tanner, D. B., Berger, H., Forro, L. & Margaritondo, G., Mar 12 2001.

  Research output: Contribution to conference › Abstract › peer-review

• The role of disorder in the magnetic properties of mechanically milled nanostructured alloys

  Leslie-Pelecky, D. L., Kirkpatrick, E. M., Pekarek, T., Schalek, R. L., Shand, P., Williams, D. S. & Yue, L., 2001, In: Materials Research Society Symposium - Proceedings. 674, p. U5.1.1-U5.1.10

  Research output: Contribution to journal › Article › peer-review
• 2000

  Magnetic measurements on the layered III–VI diluted magnetic semiconductor Ga1-xMnxS

  Pekarek, T. M., Duffy, M., Garner, J., Crooker, B. C., Miotkowski, I. & Ramdas, A. K., May 1 2000, In: Journal of Applied Physics. 87, 9, p. 6448-6450 3 p.

  Research output: Contribution to journal › Article › peer-review

• Specific heat of proximity-coupled superconducting multilayers

  Garner, J., Pekarek, T. & Benedek, R., Jun 2000, In: Journal of Physics and Chemistry of Solids. 61, 6, p. 979-984 6 p.

  Research output: Contribution to journal › Article › peer-review
• 1999

  Ballistic transport and Andreev resonances in Nb/In superconducting contacts to InAs and LTG-GaAs

  Rizk, T., Yulius, A., Yoo, W. I., Bagwell, P. F., McInturff, D., Chin, P., Woodall, J. M., Pekarek, T. M. & Jackson, T. N., May 1 1999, In: Superlattices and Microstructures. 25, 5-6, p. 757-766

  Research output: Contribution to journal › Article › peer-review

• Is the 'Finite Bias Anomaly' in planar GaAs-superconductor junctions caused by point-contact-like structures?

  Chaudhuri, S., Bagwell, P. F., McInturff, D., Chang, J. C. P., Paak, S., Melloch, M. R., Woodall, J. M., Pekarek, T. M. & Crooker, B. C., May 1999, In: Superlattices and Microstructures. 25, 5-6, p. 745-755 11 p.

  Research output: Contribution to journal › Article › peer-review
• 1998

  Magnetic, electrical, and structural studies on the metal-insulator transition in CuIr₂S_4-xSe_x (0≤x≤4)

  Somasundaram, P., Kim, D., Honig, J. M., Pekarek, T. M., Gu, T. & Goldman, A. I., 1998, In: Journal of Applied Physics. 83, 11, p. 7243-7245 3 p.

  Research output: Contribution to journal › Article › peer-review

• Magnetic and Structural Studies on the Metal-Insulator Transition in Culr/sub 2/S/sub 4-x/Se/sub x/ (0/spl les/x=4)

  Somasundaram, P., Kim, D., Honig, J. M., Pekarek, T. M., Gu, T. & Goldman, A. I., Jan 1 1998, 1998 IEEE International Magnetics Conference (INTERMAG). p. 317-318

  Research output: Chapter or Contribution to Book › Other contribution › peer-review

• MAGNETIC MEASUREMENTS ON THE III-VI DILUTED MAGNETIC SEMICONDUCTOR GA1-XMNXSE

  Pekarek, T. M., Crooker, B. C., Miotkowski, I. & Ramdas, A. K., Jan 6 1998, In: Journal of Applied Physics. 83, p. 6557–6559

  Research output: Contribution to journal › Article › peer-review

• Magnetic Measurements On The III-VI Diluted Semiconductor Ga/sub 1-x/Mn/sub x/Se

  Pekarek, T. M., Crooker, C., Miotkowski, I. & Ramdas, A. K., Jan 1 1998, 1998 IEEE International Magnetics Conference (INTERMAG). p. 122-123 2 p.

  Research output: Chapter or Contribution to Book › Other contribution › peer-review

• Spin-glass ordering in the diluted magnetic semiconductor

  Shand, P., Christianson, A. & Pekarek, T., 1998, In: Physical Review B - Condensed Matter and Materials Physics. 58, 19, p. 12876-12882 7 p.

  Research output: Contribution to journal › Article › peer-review
• 1997

  Magnetic and magnetoresistance measurements on iron-based nanoclusters in In0.53Ga0.47As

  Pekarek, T. M., Crooker, B. C., Li, S., McElfresh, M., Chang, J. C. P., McInturff, D., Harmon, E. S., Melloch, M. R. & Woodall, J. M., Apr 15 1997, In: Journal of Applied Physics. 81

  Research output: Contribution to journal › Article › peer-review

• Magnetic and specific heat studies of the effect of sulfur nonstochiometry in Culr₂S_4+x (x=-0.1, 0.0, and 0.1)

  Somasundaram, P., Kim, D., Honig, J. M. & Pekarek, T. M., Apr 15 1997, In: Journal of Applied Physics. 81, 8 PART 2A, p. 4618-4619 2 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access