Synthesis and magnetic properties of PrFe{sub 11}V{sub 1{minus}x}Ti{sub x} and their nitrides

Journal Article · Mon Dec 01 04:00:00 EST 1997 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.120354· OSTI ID:550431

Tang, S L ^[1]; Wang, B W; Zhang, C; Jin, X M ^[2]; Zhang, S Y; Du, Y W ^[1]

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1. National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, Peoples Republic of (China)
2. Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110015, Peoples Republic of (China)

We have succeeded in synthesizing PrFe{sub 11}V{sub 1{minus}x}Ti{sub x} (x=0.2{endash}1) compound and their nitrides with the ThMn{sub 12}-type structure. The phase formation and magnetic properties have been investigated by x-ray diffraction, differential thermometric analysis, and magnetic measurement. The stable temperature range of the 1-12 phase for PrFe{sub 11}V{sub 1{minus}x}Ti{sub x} alloys has been determined as a function of Ti content. PrFe{sub 11}V compounds with the ThMn{sub 12}-type structure do not exist and PrFe{sub 11}Ti compounds with the TnMn{sub 12}-type structure are obtained by annealing in a narrow temperature range between 1303 and 1383 K. Furthermore, 1-12 phase with the ThMn{sub 12}-type structure can be obtained at lower temperature and wider temperature range with decreasing Ti content x (0.2{le}x{le}1). PrFe{sub 11}V{sub 1{minus}x}Ti{sub x}N{sub y} with x=0.2{endash}1 has a T{sub c} of about 730{endash}785 K, B{sub a} larger than 8 T and M{sub s} in the range 144{endash}148 emu/g. These intrinsic magnetic properties are highly favorable for permanent magnet applications. As a preliminary, an intrinsic coercivity of 5.4 kOe is obtained for PrFe{sub 11}V{sub 0.5}Ti{sub 0.5}N{sub y} at room temperature by using mechanical alloying technique. {copyright} {ital 1997 American Institute of Physics.}

• OSTI ID: 550431
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 23 Vol. 71; ISSN 0003-6951; ISSN APPLAB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANNEALING
COERCIVE FORCE
CRYSTAL STRUCTURE
CURIE POINT
IRON ALLOYS
MAGNETIZATION
NITRIDES
PERMANENT MAGNETS
PHASE STUDIES
POWDER METALLURGY
PRASEODYMIUM ALLOYS
SYNTHESIS
THERMAL ANALYSIS
TITANIUM ALLOYS
VANADIUM ALLOYS
X-RAY DIFFRACTION