Development of rare earth nitrides as magnetic refrigerant and regenerator material for cryogenic use.

2009 Fiscal Year Final Research Report

• Project/Area Number: 19206074
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Structural/Functional materials
• Research Institution: Osaka University
• Principal Investigator: YAMAMOTO Takao Osaka University, 工学研究科, 教授 (00174798)
• Co-Investigator(Kenkyū-buntansha): NAKAGAWA Takashi 東京工業大学, 理工学研究科, 准教授 (70273589) ; SEINO Satoshi 大阪大学, 工学研究科, 講師 (90432517) ; KUSUNOSE Takefumi 大阪大学, 産業科学研究所, 助教 (60314423) ; SEKINO Tohru 東北大学, 多元物質科学研究所, 准教授 (20226658) ; NUMAZAWA Takenori (独)物質材料研究機構, 研究員 (30354319)
• Project Period (FY): 2007 – 2009
• Keywords: 磁気冷凍 / 比熱 / 蓄冷材 / 窒化物 / 希土類

Research Abstract

Nitrides of Gd, Tb, Dy, Ho, Er and their binary nitrides were synthesized by the HIP method. Their magnetization and specific heat were measured to evaluate the magnetic entropy change and adiabatic demagnetization cooling. Electronic conductivities of some of their samples were measured as well. It was ascertained that this class of material is suitable for refrigerant of magnetic cooling system for hydrogen liquefaction. Spherical material of GdN with diameter of 0.85-1.0mm was synthesized and its weight gain caused by exposure to dry air for 24h was found less than 1%. This spherical material was charged into a magnetic refrigeration test device and a magnetic cooling of 5 degrees was measured in a region of 55-65K.

Research Products

• [Journal Article] Magnetocaloric Effect of Rare Earth Nitrides (2008)
  • Author(s): Yusuke Hirayama, Takashi Nakagawa, Takafumi Kusunose, Takao A. Yamamoto
  • Journal Title: IEEE TRANSACTIONS ON MAGNETICS VOL.44,NO.11 Pages: 2997-3000
  • Peer Reviewed
• [Journal Article] Magnetocaloric Effect, Specific Heat and Adiabatic Temperature Change of HoxEr1-xN (x = 0. 25, 0. 5, 0. 75), Yusuke Hirayama, Naoto Tomioka, Shohei Nishio (2008)
  • Author(s): Takafumi Kusunose, Takeshi Nakagawa, Koji Kamiya, Takenori Numazawa, Takao A. Yamamoto
  • Journal Title: Journal of Alloys and Compounds 462 Pages: L12-L15
  • Peer Reviewed
• [Journal Article] Magnetocaloric Effects of Binary Rare Earth Nitrides (2007)
  • Author(s): Yusuke Hirayama, Takashi Nakagawa, Takafumi Kusunose, Takao
  • Journal Title: A. Yamamoto, Mater. Res. Soc. Symp. Proc. Pages: 1040E-Q09-05
  • Peer Reviewed
• [Presentation] 磁気冷凍材料としての球状GdNの合成とその評価 (2010)
  • Author(s): 平山悠介, 岡田裕之, 中川貴, 山本孝夫, 楠瀬尚史, 入江年雄、中村英次
  • Organizer: 粉体粉末冶金協会平成22年度春季大会
  • Place of Presentation: 早稲田大学
  • Year and Date: 20100525-20100527
• [Presentation] Experimental study of Active Magnetic Regenerator (AMR) composed of spherical GdN (2010)
  • Author(s): Yusuke Hirayama, Hiroyuki Okada, Takashi Nakagawa, Takao Yamamoto, Takafumi Kusunose, Numazawa Takenori, Koichi Mastumoto, Toshio Irie, Eiji Nakamura
  • Organizer: 16th Int'l Cryocooler Conf.
  • Place of Presentation: Georg. Tech Hotel and Conf. Center, USA.
  • Year and Date: 20100517-20100520
• [Presentation] 磁気冷凍応用を目指した球状GdN材料の合成 (2009)
  • Author(s): 岡田裕之, 西村健太郎, 平山悠介, 中川貴, 山本孝夫, 楠瀬尚史, 入江年雄, 中村英次
  • Organizer: 第81回2009年度秋季低温工学・超電導学会
  • Place of Presentation: 岡山大学創立50周年記念会館
  • Year and Date: 20091118-20091120
• [Presentation] 希土類窒化物の電気伝導度測定 (2009)
  • Author(s): 西村健太郎, 岡田裕之, 平山悠介, 中川貴, 楠瀬尚史, 山本孝夫
  • Organizer: 第81回2009年度秋季低温工学・超電導学会
  • Place of Presentation: 岡山大学創立50周年記念会館
  • Year and Date: 20091118-20091120
• [Presentation] 希土類窒化物のキュリー温度の制御 (2009)
  • Author(s): 平山悠介, 中川貴, 山本孝夫
  • Organizer: 日本金属学会2009年秋季(第145回)大会
  • Place of Presentation: 京都大学吉田キャンパス
  • Year and Date: 20090915-20090917
• [Presentation] 磁気冷凍応用を目指した希土類窒化物の耐酸化性 (2009)
  • Author(s): 小田原年克, 西尾祥平, 平山悠介, 山本孝夫, 中川貴, 楠瀬尚史, 入江年雄, 高田裕章, 中村英次
  • Organizer: 日本金属学会2009年春期(第144回)大会
  • Place of Presentation: 東京工業大学大岡山キャンパス
  • Year and Date: 20090328-20090330
• [Presentation] 希土類窒化物の磁気冷凍材料としての評価 (2008)
  • Author(s): 平山悠介, 中川貴, 山本孝夫, 神谷宏治, 沼澤健則
  • Organizer: 第79回2008年度秋季低温工学・超伝導学会
  • Place of Presentation: 於高知文化プラザかるぽーと
  • Year and Date: 20081012-20081014
• [Presentation] 希土類窒化物の断熱消磁温度変化ΔTの評価 (2008)
  • Author(s): 平山悠介, 西尾祥平, 小田原年克, 中川貴, 楠瀬尚史, 山本孝夫
  • Organizer: 日本金属学会2008年秋期大会
  • Place of Presentation: 熊本大学
  • Year and Date: 20080923-20080925
• [Presentation] 西尾祥平, 平山悠介, 小田原年克, 山本孝夫, 楠瀬尚史, 中川貴 (2008)
  • Author(s): 西尾祥平, 平山悠介, 小田原年克, 山本孝夫, 楠瀬尚史, 中川貴
  • Organizer: 粉体粉末冶金協会平成20年度春季大会
  • Place of Presentation: 早稲田大学
  • Year and Date: 20080527-20080529
• [Presentation] Evaluation of Magnetocaloric Effect of Rare Earth Nitrides (2008)
  • Author(s): Yusuke Hirayama, Takashi Nakagawa, Takafumi Kusunose, Takao. A. Yamamoto
  • Organizer: Conference
  • Place of Presentation: Madrid, Spain.
  • Year and Date: 20080504-20080508
• [Presentation] 比熱測定による二元系希土類窒化物の磁気熱量効果の評価 (2008)
  • Author(s): 平山悠介, 西尾祥平, 土屋貴史, 山本孝夫, 中川貴, 楠瀬尚史
  • Organizer: 日本金属学会2008年春期大会
  • Place of Presentation: 武蔵工業大学
  • Year and Date: 20080326-20080328
• [Presentation] Magnetocaloric Effects of Binary Rare Earth Nitrides (2007)
  • Author(s): Takafumi Kusunose, Takashi Nakagawa, Koji Kamiya, Takenori Numazawa, Takao Yamamoto
  • Organizer: 2007 MRS Fall Meeting
  • Place of Presentation: Boston, USA
  • Year and Date: 20071126-20071130
• [Patent(Industrial Property Rights)] 希土類窒化物およびその製造方法、ならびに磁気冷凍材料および蓄冷材料 (2010)
  • Inventor(s): 山本孝夫, 平山悠輔, 中川貴, 入江年雄
  • Industrial Property Rights Holder: (株)三徳・国立大学法人大阪大学
  • Industrial Property Number: 特許・特願2009-196020
  • Filing Date: 2010-08-04