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| 1 | Effects of interstitial H and/or C atoms on the magnetic and magnetocaloric properties of La(Fe, Si)_(13)-based compounds显示文摘La(Fe,Si)13-based compounds have been considered as promising candidates for magnetic refrigerants particularly near room temperature.Herein we review recent progress particularly in the study of the effects of interstitial H and/or C atoms on the magnetic and magnetocaloric properties of La(Fe,Si)13compounds.By introducing H and/or C atoms,the Curie temperature TC increases notably with the increase of lattice expansion which makes the Fe 3d band narrow and reduces the overlap of the Fe 3d wave functions.The first-order itinerant-electron metamagnetic transition is conserved and the MCE still remains high after hydrogen absorption.In contrast,the characteristic of magnetic transition varies from first-order to second-order with the increase of C concentration,which leads to remarkable reduction of thermal and magnetic hysteresis.In addition,the introduction of interstitial C atoms promotes the formation of NaZn13-type(1:13)phase in La(Fe,Si)13compounds,and thus reducing the annealing time significantly from 40 days for LaFe11.7Si1.3to a week for LaFe11.7Si1.3C0.2.The pre-occupied interstitial C atoms may depress the rate of hydrogen absorption and release,which is favorable to the accurate control of hydrogen content.It is found that the reduction of particle size would greatly depress the hysteresis loss and improve the hydrogenation process.By the incorporation of both H and C atoms,large MCE without hysteresis loss can be obtained in La(Fe,Si)13compounds around room temperature,for instance,La0.7Pr0.3Fe11.5Si1.5C0.2H1.2exhibits a large|SM|of 22.1 J/(kg·K)at TC=321 K without hysteresis loss for a field change of 0 5 T. | ZHANG Hu HU FengXia SUN JiRong SHEN BaoGen | 2013 | Science China(Physics,Mechanics & Astronomy)2013，56，12： | 6 |
| 2 | 显示文摘 | Hu Fengxia Shen Baogen Sun Jirong | 2000 | Appl Phys Lett2000，76，： | 1 |
| 3 | 显示文摘 | Hu Fengxia Shen Baogen sun jirong | 2001 | Appl Phys Lett2001，78，23： | 1 |
| 4 | 显示文摘 | Hu Fengxia Shen Baogen | 2000 | Appl Phys Lett2000，80，5： | 1 |
| 5 | Magnetic Hardening of Rapidly Quenched Co-M-Zr(M=B,Fe)Alloys显示文摘Effects of the quenching rate and annealing temperature on hard magnetic properties of rapidly quenched Co_(84-x)B_(x)Zr_(16)and Co_(82-x)Fe_(x)Zr_(18)alloys were studied.The B-or Fe-content dependence of room temperature coercivity H_(c),remanence B_(r) and maximum energy product(BH)_(max) are obtained.The H_(c) is suggested to originate from the microstructure with the optimal grain size. | SHEN Baogen YANG Linyuan CAO Lei GUO Huiqun | 1993 | Chinese Physics Letters1993，10，3： | 1 |
| 6 | 显示文摘 | Hu Fengxia Shen Baogen | 2000 | J Phys: Condens Matter2000，12，： | 1 |
| 7 | 显示文摘 | Hu Fengxia Shen Baogen | 2001 | Physical Review B2001，64，： | 1 |
| 8 | 显示文摘 | Hu Fengxia Shen Baogen | 2001 | Appl Phys Lett2001，78，23： | 1 |
| 9 | Mossbauer effect probe of field-induced magnetic phase transition in LaFe13-xSix intermetallic compounds 显示文摘 | Cheng Zhaohua Di Naili Li Qingan Kou Zhiqi Luo Zhi Ma Xiao Wang Guangjun Hu Fengxia Shen Baogen | 2004 | Applied Physics Letters2004，85，10： | 1 |
| 10 | Large magnetocaloric effect in metamagnetic HoPdAl显示文摘Magnetic properties and magnetocaloric effects(MCEs) of the HoPdAl compounds with the hexagonal ZrNiAl-type and the orthorhombic TiNiSi-type structures are investigated.Both the compounds are found to be antiferromagnet with the Néel temperature TN=12 and 10 K,respectively.A field-induced metamagnetic transition from antiferromagnetic(AFM) state to ferromagnetic(FM) state is observed below TN.For the hexagonal HoPdAl,a small magnetic field can induce an FM-like state due to a weak AFM coupling,which leads to a high saturation magnetization and gives rise to a large MCE around TN.The maximal value of magnetic entropy change(?SM) is-20.6 J/kg K with a refrigerant capacity(RC) value of 386 J/kg for a field change of 0-5 T.For the orthorhombic HoPdAl,the critical field required for metamagnetic transition is estimated to be about 1.5 T,showing a strong AFM coupling.However,the maximal SM value is still-13.7 J/kg K around TN for a field change of 0-5 T.The large reversible SM and considerable RC suggest that HoPdAl may be an appropriate candidate for magnetic refrigerant in a low temperature range. | XU ZhiYi SHEN BaoGen | 2012 | Science China(Technological Sciences)2012，55，2： | 1 |
| 11 | Mechanism of the anomalous temperature dependence of coercivity in Sm(Co,Fe,Cu,Zr)z high-temperature magnets显示文摘 | RONG Chuanbing ZHANG Hongwei SHEN Baogen | 2006 | Applied Physics Letters2006，88，04： | 1 |
| 12 | Effect of the substitution of Pr for Nd on microstructure and magnetic properties of nanocomposite Nd2Fe14 B/α- Fe magnets 显示文摘 | Zhang Wenyong Zhang Shaoying Yah Aru Zhang Hongwei Shen Baogen | 2001 | Journal of Magnetism and Magnetic Materials2001，225，： | 1 |
| 13 | Applied Physics Letters显示文摘 | Hu Fengxia Shen Baogen Sun Jirong | 2002 | 80(5): 8262002，80，5： | 1 |
| 14 | Advanced Materials 显示文摘 | Shen Baogen Sun Jirong Hu Fengxia | 2009 | 21(45): 45452009，21，45： | 1 |
| 15 | Journal of Physics: Condensed Matter显示文摘 | Hu Fengxia Shen Baogen Sun Jirong | 2000 | 12: 6912000，12，： | 1 |
| 16 | Giant low-field magnetocaloric effect in ferromagnetically ordered Er_(1-x)Tm_(x)Al_(2)(0≤x≤1)compounds显示文摘Magnetocaloric material is the key working substance for magnetic refrigerant technology,for which the low-field and low-temperature magnetocaloric effect(MCE)performance is of great importance for practical applications at low temperatures.Here,a giant low-field magnetocaloric effect in ferromagnetically ordered Er_(1-x)Tm_(x)Al_(2)(0≤x≤1)compounds was reported,and the magnetic structure was characterized based on low-temperature neutron powder diffraction.With increasing Tm content from 0 to 1,the Curie temperature of Er_(1-x)Tm_(x)Al_(2)(0≤x≤1)compounds decreases from 16.0 K to 3.6 K.For Er_(0.7)Tm_(0.3)Al_(2) compound,it showed the largest low-field magnetic entropy change(–SM)with the peak value of 17.2 and 25.7 J/(kg K)for 0–1 T and 0–2 T,respectively.The(–SM)max up to 17.2 J/(kg K)of Er0.7Tm0.3Al2 compound for 0–1 T is the largest among the intermetallic magnetocaloric materials ever reported at temperatures below 20 K.The peak value of adiabatic temperature change(Tad)max was determined as 4.13 K and 6.87 K for 0–1 T and 0–2 T,respectively.The characteristic of second-order magnetic transitions was confirmed on basis of Arrott plots,the quantitative criterion of exponent n,rescaled universal curves,and the mean-field theory criterion.The outstanding low-field MCE performance with low working temperatures indicates that Er_(1-x)Tm_(x)Al_(2)(0≤x≤1)compounds are promising candidates for magnetic cooling materials at liquid hydrogen and liquid helium temperatures. | Shuxian Yang Xinqi Zheng Dingsong Wang Juping Xu Wen Yin Lei Xi Chaofan Liu Jun Liu Jiawang Xu Hu Zhang Zhiyi Xu Lichen Wang Yihong Yao Maosen Zhang Yichi Zhang Jianxin Shen Shouguo Wang Baogen Shen | 2023 | Journal of Materials Science & Technology2023，，15： | 0 |
| 17 | Magnetic Proper ties and Crystallization of Amorphous Fe-Nd-B Alloys at Cons taut B Concentration显示文摘Ma.gnetiza.tion,Curie teiiiperti.ture mid crystallization temperature measurements for amorphous(Fe_(1-x)Nd_(x))_(100-y)B_(y) iilloys with y=6,18.5 and 25 have been made.Spon-taneous magnetization shows a monotonic decrease with x,and the noncollinear spin structures have been proposed to expluin the observed results.The composition dependence of Curie tenipertitiire is exphtined by the average niolecular-field model.The substitu lion of siim.ll N<1 for Fc is found to have a strong enha.nccinent of the theriiml stability in amorphous Fe-Nd-B alloys. | SHEN Baogen YANG Linyuan ZHAO Jiangao GUO Huiqun | 1993 | Chinese Physics Letters1993，10，10： | 0 |
| 18 | Neutron Diffraction Studies of the Magnetic Structure of Ho_2Fe_9Ga_(8~x)Alx | Chen Dongfeng Gou Cheng Sun Kai China Institute of Atomic Energy,P.O.Box 275-30,Beijing 102413Yan Qiwei Zhang Panlin Shen Baogen Cheng Zhaohua State Key Laboratory of Magnetism,Intstitute of Physics,the Chinese Academy of Sciences,P.O.Box 603,Beijing 100080 | 1997 | Chinese journal of nuclear physics1997，，1： | 0 |
| 19 | DISACCOMMODATION OF INITIAL SUSCEPTIBILITY IN AMORPHOUS Fe_(90-x)Ni_xZr_(10) ALLOYS显示文摘The disaccommodation(DA)measurements of initial susceptibility were performed inamorphous Fe90-xNixZr10(x=10,20,30)alloys.The DA was measured for two differentamorphous states:as-quenched and pretreated at 537 K for 45 min.For all the as-quenched samples,in the isochronal spectra of DA a well defined relaxation peak around350 K is accompanied by a samll but distinct peak near the Curie temperature ofFe90Zr10 phase(Tc=230 K).The reversibility and annealing effect on DA are analyzedwithin the framework of two-level model.The fits of the theory to the experimentaldata of reversible relaxation processes gave a spectrum,of activation energies and pre-exponential factor. | LI Yinfeng GUO Huiqun XU Rufeng SHEN Baogen Laboratory of Magnetics,Institute of Physics,Academia Sinica,Beijing,China | 1992 | Acta Metallurgica Sinica(English Letters)1992，5，11： | 0 |
| 20 | CRYSTALLIZATION OF AMORPHOUS Fe_(62)Co_(15.5)Nd_(4)B_(18.5) ALLOY AND ITS INFLUENCE ON HARD MAGNETIC PROPERTIES显示文摘Magnetic properties and crystallization of amorphous Fe_(62)Co_(15.5)Nd_(4)B_(18.5) alloy are studied.The Curie temperature of the present sample is 127K higher than that of amorphous Fe_(77.5)Nd_(4)B_(18.5) alloy,but their crystallization temperature is compatible with each other.A coercive field of 2.34kOe,a remanence of 12.3kG and an energy product of 11.6MGOe are obtained at room temperature in the Fe_(62)Co_(15.5)Nd_(4)B_(18.5) alloy annealed at 650°C.The 15.5at.%-Co substitution for Fe results in an increase of about 1l0K in Tc of 2:14:1 phase. | SHEN Baogen YANG Linyuan ZHANG Junxian WO Feng NING Taishan ZHAO Jiangao GUO Huiqun ZHAN Wenshan | 1990 | Chinese Physics Letters1990，7，9： | 0 |
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