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Thin films of Ti1-xCoxO2 (x=0 and 0.03) have been prepared on sapphire substrates by spin-on technique starting from metalorganic precursors. When heat treated in air at 550 and 700 C respectively, these films present pure anatase and…

材料科学 · 物理学 2009-11-10 R. Suryanarayanan , Vaman Naik , Parasuram Kharel , Punya Talgala , Ratna Naik

The interplay between magnetism and crystal structures in three CaFe$_{2}$As$_{2}$ samples is studied. For the nonmagnetic quenched crystals, different crystalline domains with varying lattice parameters are found, and three phases…

We report on an anomalous magnetization observed with temperature for low magnetic fields applied in the plane of a film formed by a thin layer of Fe-Rh deposited on a thin foil of ordered Fe$_3$Pt. The anomalous effect resembles a…

材料科学 · 物理学 2012-08-27 S. Salem-Sugui, , A. D. Alvarenga , R. D. Noce , C. Salazar Mejia , H. Salim , F. G. Gandra

Precise magnetic hysteresis measurements of small single crystals of Mn$_{12}$ acetate of spin 10 have been conducted down to 0.4 K using a high sensitivity Hall magnetometer. At higher temperature (>1.6K) step-like changes in magnetization…

介观与纳米尺度物理 · 物理学 2009-10-31 Andrew D. Kent , Yicheng Zhong , Louisa Bokacheva , Daniel Ruiz , David N. Hendrickson , M. P. Sarachik

This study investigates the effects of Sb, Ge, and Ga doping in AlFe$_2$B$_2$ on magnetic and magneto-caloric properties. Samples of AlFe$_2$B$_2$ and AlFe$_{1.9}$M$_{0.1}$B$_2$ (M= Ge, Ga and Sb) with 20\% excess Al were synthesized by arc…

材料科学 · 物理学 2025-06-30 R. Preyadarshini , S. Kavita , Ashutosh Kumar , D. Sivaprahasam

The magnetic compensation and magnetostriction properties in Fe doped CoCr2O4 samples have been investigated. Structural and magnetic measurements imply that the doped Fe3+ ions initially occupy the B1(Cr) sites when x<0.1, and then mainly…

材料科学 · 物理学 2012-11-30 Hongguo Zhang , Wenghong Wang , Enke Liu , Xiaodan Tang , Guijiang Li , Hongwei Zhang , Guangheng Wu

Chromium(III) oxide is a classical collinear antiferromagnet with a linear magnetoelectric effect. We are presenting the measurements of the magnetoelectric susceptibility $\alpha$ of a sputter-deposited 500-nm film and a bulk…

介观与纳米尺度物理 · 物理学 2017-04-05 Muftah Al-Mahdawi , Yohei Shiokawa , Satya Prakash Pati , Shujun Ye , Tomohiro Nozaki , Masashi Sahashi

We study the magnetisation dynamics of a bulk single crystal Cr$_2$Ge$_2$Te$_6$ (CGT), by means of broadband ferromagnetic resonance (FMR), for temperatures from 60 K down to 2 K. We determine the Kittel relations of the fundamental FMR…

材料科学 · 物理学 2019-11-05 S. Khan , C. W. Zollitsch , D. M. Arroo , H. Cheng , I. Verzhbitskiy , A. Sud , Y. P. Feng , G. Eda , H. Kurebayashi

This research paper investigates new and first insights into the magnetic and magnetocaloric properties of one-dimensional (1D) cobalt ferrite CoFe2O4 (CFO) nanofibers elaborated by sol gel based electrospinning technique, particularly…

The anisotropic magnetic properties of the antiferromagnetic compound CePd$_2$Ge$_2$, crystallizing in the tetragonal crystal structure have been investigated in detail on a single crystal grown by Czochralski method. From the electrical…

强关联电子 · 物理学 2015-06-16 Arvind Maurya , R. Kulkarni , S. K. Dhar , A. Thamizhavel

We report on the influence of the improved L21 ordering degree on the magnetic properties of Co2MnSi Heusler films. Different fractions of the L21 phase are obtained by different post-growth annealing temperatures ranging from 350 degC to…

材料科学 · 物理学 2007-08-27 O. Gaier , J. Hamrle , S. J. Hermsdoerfer , B. Hillebrands , Y. Sakuraba , M. Oogane , Y. Ando

The structural and magnetic properties of a spin-$\frac{1}{2}$ averievite (CsBr)Cu$_5$V$_2$O$_{10}$ are investigated by means of temperature-dependent x-ray diffraction, magnetization, heat capacity, and $^{51}$V nuclear magnetic resonance…

材料科学 · 物理学 2024-11-12 S. Guchhait , D. V. Ambika , S. Mohanty , Y. Furukawa , R. Nath

The magnetization (M) as a function of temperature (T) from 2 to 300 K and in-plane field (H) up to 1 kOe, room temperature easy and hard direction in-plane field hysteresis loops for fields between -100 and +100 Oe, and 10 GHz…

其他凝聚态物理 · 物理学 2015-06-25 Jaydip Das , Sangita S. Kalarickal , Kyoung-Suk Kim , Carl E. Patton

The magnetic properties of the compound Fe$_5$Si$_{1-x}$P$_{x}$B$_2$ have been studied, with a focus on the Curie temperature $T_\textrm{C}$, saturation magnetization $M_\textrm{S}$, and magnetocrystalline anisotropy. Field and temperature…

The time decay of the thermo-remanent magnetization (TRM) in Fe-Cr giant magnetoresistive (GMR) multilayers has been investigated. The magnetization in these multilayers relaxes as a function of time after being cooled in a small magnetic…

材料科学 · 物理学 2007-05-23 R. S. Patel , A. K. Majumdar , A. K. Nigam

We report the magnetic properties of mechanically milled Co$_{0.2}$Zn$_{0.8}$Fe$_2$O$_4$ spinel oxide. After 24 hours milling of the bulk sample, the XRD spectra show nanostructure with average particle size $\approx$ 20 nm. The as milled…

软凝聚态物质 · 物理学 2009-11-07 R. N. Bhowmik , R. Ranganathan , S. sarkar , C. Bansal , R. Nagarajan

We present the studies of Sn/1-x/Cr/x/Te semimagnetic semiconductors with chemical composition x ranging from 0.004 to 0.012. The structural characterization indicates that even at low average Cr-content x < ?0.012, the aggregation into…

材料科学 · 物理学 2023-07-19 L. Kilanski , A. Podgórni , M. Górska , W. Dobrowolski , V. E. Slynko , E. I. Slynko

The strain dependence of electric and magnetic properties has been widely investigated, both from a fundamental science perspective and an applications point of view. Electromechanical coupling through field-induced polarization rotation…

材料科学 · 物理学 2015-06-22 Zhiguang Wang , Yaojin Wang , Haosu Luo , Jiefang Li , D. Viehland

We prepared very high-coercivity cobalt ferrite nanoparticles using short-time high-energy mechanical milling. After the milling process, the coercivity of the nanoparticles reached 3.75 kOe - a value almost five times higher than that…

介观与纳米尺度物理 · 物理学 2015-06-19 E. F. Chagas , A. S. Ponce , R. J. Prado , G. M. Silva , J. Bettini , E. Baggio-Saitovitch

5$\mu$m thick NdFeB films have been sputtered onto 100 mm Si substrates using high rate sputtering (18 $\mu$m/h). Films were deposited at &#8804; 500 C and then annealed at 750 C for 10 minutes. While films deposited at temperatures up to…